Jennifer SAN MARCO

Jennifer SAN MARCO

Classification: Mass murderer
Characteristics: Revenge - Former US Postal Service employee - Shooting spree
Number of victims: 7
Date of murders: January 30, 2006
Date of birth: December 6, 1961
Victims profile: Beverly Graham, 54 (her one-time neighbor) / Ze Fairchild, 37 / Maleka Higgins, 28 / Nicola Grant, 42 / Guadalupe Swartz, 52 / Dexter Shannon, 57 / Charlotte Colton, 44
Method of murder: Shooting
Location: Goleta, Santa Barbara County, California, USA
Status: Committed suicide by shooting herself the same day

Jennifer San Marco (December 6, 1961 – January 30, 2006) (aged 44) was a former US Postal Service employee and mass murderer who killed seven people in Goleta, California.

San Marco's background

San Marco had previously worked as a dispatcher for the Santa Barbara Police Department in the mid-1990s, a job for which she underwent a background check and psychological evaluation. She left the job after several months, not unusual for the high-stress occupation.

San Marco eventually went to work for the postal service as a clerk, but left on psychological disability following a 2003 incident in which she had to be removed from her workplace by police. San Marco subsequently moved to a small town in New Mexico sometime in 2004. According to colleagues, she had a history of making racially charged statements, and once attempted to start a publication entitled The Racist Press.

The spree shooting

On January 30, 2006, San Marco shot and killed her one-time neighbor, Beverly Graham, and then subsequently drove to the mail processing plant at which she previously worked in Goleta, California. San Marco entered the sprawling plant by driving through a gate behind another car. She gained entry to the building by taking an employee's identification badge at gunpoint. She then shot and killed six employees of the plant with a pistol before taking her own life.

San Marco apparently believed that she was the target of a conspiracy centered at the Goleta postal facility, according to writings recovered from her house in New Mexico. A spokesman for the Santa Barbara County Sheriff's Department speculated that San Marco's paranoia and history of mental illness may have motivated her to commit the murders.


Postal killer believed she was target of a plot

Writings that allude to a conspiracy help establish motive in rampage

Msnbc.msn.com

February 3, 2006

The woman whose suicidal rampage at a Santa Barbara County postal facility killed seven people believed that she was threatened by a conspiracy involving its workers, authorities said.

Jennifer San Marco left writings at her New Mexico desert home alluding to a vague plot involving the Goleta mail-sorting plant where she once worked, a local medical facility and the Santa Barbara County Sheriff's Department, sheriff's Sgt. Erik Raney said in a telephone interview Friday.

"There was several different writings that were described to me as kind of just ramblings, not anything specific, but they alluded to a conspiracy," he said.

"She obviously felt that the post office was out to get her in one way or another," Raney said. "That establishes as good of a motive (for the killings) as we can determine at this point."

Raney said that despite a history of mental illness, San Marco managed to buy the gun and ammunition used in Monday night's killings from two New Mexico pawn shops.

Gun purchase went unquestioned

She bought the 15-round, 9 mm Smith & Wesson model 915 last August from a pawn shop in Grants, N.M., and an unspecified amount of ammunition from a pawn shop in Gallup, N.M., Raney said.

How she managed to purchase it is "the million-dollar question yet," he said.

Paul Castillo, owner of Ace Pawn and Antiques, told the Santa Barbara News-Press that San Marco bought the gun for $325 without saying why she needed the weapon.

She filled out an application for a background check, which didn't turn up any problems, and picked up the gun two days later, Castillo said.

The gun originally was purchased by another person in San Jose and later sold to the pawn shop, Raney said.

The last victim to die in the rampage was the first buried Friday.

More than 1,200 mourners overflowed a church for the funeral Mass for Charlotte Colton, a mother of three who was shot in the head and died Wednesday at a hospital.

"If there was anything she did it, was love boldly and fearlessly," Colton's niece, Katrina Baggao de la Cruz, told mourners at St. Raphael's Catholic Church, the News-Press reported. "You simply wanted to be a better person around her."

Colton, 44, of Santa Barbara, was survived by her husband, Jim, and three sons. She was buried at Calvary Cemetery.

Psychiatric history

San Marco, 44, worked at the Goleta postal facility for about six years before she was placed on retirement disability for psychological reasons in 2003, the Postal Service has said.

Employees said her behavior was increasingly more bizarre and that she sometimes talked or argued with herself or made racist comments, although she never made any threats to them.

In February 2001, deputies were called to remove her from the plant because of strange behavior.

She was sent to a Ventura psychiatric hospital for three days of assessment but Raney said he did not know the diagnosis. The hospital was not the medical facility mentioned in San Marco's writings, Raney said. He declined to identify the facility named in the writings.

"It might have just been a place where she had her regular doctor's visits," he said.

The 2001 incident may have prompted her to place the Sheriff's Department in her conspiracy but it was unclear whether the incident specifically motivated the killing spree, Raney said.

Search for clues

"Was this cognitive thought? Did she have a specific grudge for a specific reason and came back with a vendetta in mind, or (was it) a manifestation of her psychosis? ... I don't know that we'll ever know that," he said.

Also found in the woman's home was a check for cash with the notation "will," indicating San Marco left a will, "and that may shed more light on what's happened here," Raney said.

Police in New Mexico say San Marco, who was white, distributed a publication called "The Racist Press." The newsletter included error-laden explanations of various religions and a confusing theory linking the U.S. government to "Son of Sam" killer David Berkowitz, the Ku Klux Klan and racist murders.

Authorities believe that San Marco drove from New Mexico to California last week. On Monday night, she sneaked into a Santa Barbara condominium and shot to death her first victim, a woman who had been her neighbor several years ago and with whom she had argued.

Less than an hour later, San Marco began her rampage at the postal plant.


Postal Shooter's Bizarre Behavior

CBSNews.com

February 2, 2006

Jennifer San Marco's reputation for bizarre behavior had resulted in her leaving the Postal Service in June 2003 after six years. She was granted early retirement on a medical disability because of psychological problems, the U.S. Postal Service said.

But, no one suspected the ex-postal worker would go on to commit the nation's bloodiest shooting at a postal installation in nearly 20 years.

San Marco is also linked to the killing of a former neighbor.

The body of Beverly Graham, 54, was found in her condominium a day after authorities say Jennifer San Marco opened fire inside the mail sorting center where she once worked. Another woman wounded in the rampage died Wednesday, bringing the death toll to eight, including San Marco.

"The shell casings found match those found at the postal distribution center," Santa Barbara County Sheriff Jim Anderson told reporters.

He said Graham's neighbors told authorities they heard the sound of gunfire between 7:15 p.m. and 8:15 p.m. Monday night. Beginning at 9 p.m., authorities said, San Marco began shooting six postal employees and committed suicide at the Santa Barbara Processing and Distribution Center.

"She went through all the requisite screenings. There were no prior indications" of problems, said Keith Blackman, a media consultant to the Postal Service.

And in the city of Milan, New Mexico, where San Marco was a regular presence at municipal offices, village Manager Carlos Montoya told the Los Angeles Times, "We felt she was unbalanced." "Now, violent? I guess it crossed my mind. But just that she would slash a window or damage property or something," Montoya said.

Before becoming a postal worker, San Marco, 44, worked as a Santa Barbara police dispatcher in the mid-1990s and passed an extensive background check and psychological exam. She left after a few months, not unusual for a stressful job with a high turnover rate, police Lt. Paul McCaffrey told the Santa Barbara News-Press. The job did not include weapons training.

Acquaintances said San Marco, who was white, sometimes talked to herself and spewed racist comments.

Former plant worker Jeff Tabala recalled that San Marco seemed particularly hostile to Asians while working for the Postal Service. He said all of the dead were minorities: Three were black, one was Chinese-American, one was Hispanic and one was Filipino.

It is unclear why San Marco killed her victims, but the U.S. Postal Inspector says that "chances are" she knew and chose her victims, CBS News affiliate KCBS reports. Santa Barbara County Sheriff Jim Anderson said it wasn't clear if the killings were racially motivated.

It is clear the shooter had a long history of mental problems, officials said. She had been placed on a medical leave from her postal job for psychological problems.

In 2003, Tabala said, he saw sheriff's deputies pull San Marco out from under a mail-sorting machine and wheel her away in handcuffs on a mail cart after a disturbance.

She returned several months later but "people started coming to me and saying, 'She's acting erratically,'" Tabala said. "She was screaming. She was saying a lot of racist comments. It was pretty ugly."

San Marco was escorted out of the building by management and never returned, Tabala said.

"She seemed to be having conversations and there wasn't anyone around her. She'd be just jabbering away." Tabala said.

Graham's boyfriend, Eddie Blomfield, said San Marco would often go outside singing loudly, which led to arguments between the women. Graham's brother Les Graham Jr. said his sister had complained about a woman who "used to come out and rant and rave in front of her building."

Authorities in New Mexico, where San Marco moved in 2004, also described her increasingly bizarre behavior after she lost her job. Police were contacted about San Marco at least twice after she was accused of harassing an office worker and appearing naked at a gas station. She was dressed when officers arrived

A deputy clerk for the city of Milan, N.M., said San Marco applied for a business license in 2004 for a publication called "The Racist Press" that she said she planned to launch.

"We weren't sure what she was going to do next," said Terri Gallegos, deputy clerk for the city of Milan, New Mexico, where San Marco applied for a business license in 2004 for a publication called "The Racist Press" that she said she planned to launch. Another time she said she wanted to register a cat food business.

During one meeting, Gallegos said, San Marco carried on a conversation with herself "like she was arguing with someone but there was no one there."

Last March, office workers called authorities after the 44-year-old woman made what Gallegos described as a rude allegation. Other times, Gallegos said, San Marco would come in and simply stare at one employee in particular.

In June, police talked to her after someone at a gas station called to complain of nudity, Police Chief Marty Vigil said. San Marco was dressed when officers arrived.

U.S. Postal Inspector Randy DeGasperin told reporters Tuesday that San Marco left the mail facility on a medical leave in 2003 after her co-workers expressed concerns she might hurt herself.

"She was not making any threats or anything of that nature," DeGasperin said. "It was more for her safety."

Authorities said it was unclear whether San Marco targeted specific employees when she arrived at the postal center about 9 p.m. Monday.

"According to witnesses from the scene, she had a 9mm pistol and reloaded at least once during her rampage," said Santa Barbara County Sheriff James Anderson.

Killed were Ze Fairchild, 37, and Maleka Higgins, 28, both of Santa Barbara; Nicola Grant, 42, and Guadalupe Swartz, 52, both of Lompoc; and Dexter Shannon, 57, of Oxnard. Charlotte Colton, 44, of Santa Barbara, died Wednesday after being hospitalized in critical condition.

Higgins had just returned from maternity leave about a month ago and leaves behind a baby girl and her husband.

"She was a talker. There was not a moment she was quiet," said colleague and friend Lexi Bushnell told the Santa Barbara News-Press. "She loved to lighten things up."

Swartz was emerging from a dark period after losing her husband, Donald, three years ago to cancer, according to friend Darlene Skura.

"She was becoming more active, starting to get on with her life," Skura told the Los Angeles Times in Wednesday's editions.

Grant's neighbors said it was not uncommon to see the married mother of two playing basketball with her children.

"She was such a joy," said friend and neighbor Leslie Brown. "When you talked to her, she just glowed."

Police said San Marco entered the sprawling Santa Barbara Processing and Distribution Center by driving through a gate behind another car. She gained entry to the building by taking an employee's identification badge at gunpoint. That worker was not hurt.

Only about 80 of the approximately 300 people who work at the mail-sorting center were on hand when San Marco arrived. Authorities said many of them fled to a fire station across the street when the shooting began.

"I was dumping mail on a belt when the gunshots suddenly (went) 'Boom! Boom! Boom! Boom!" said postal worker Alger Busante, 56, of Santa Barbara.

It was the deadliest shooting at any workplace since 2003, when 48-year-old Doug Williams gunned down 14 co-workers, killing six, at a Lockheed Martin aircraft parts plant in Meridian, Miss., before turning the gun on himself.


Woman in California Postal Shootings Had History of Bizarre Behavior

The New York Times

February 3, 2006

GRANTS, N.M., Feb. 2 - Two months before Jennifer San Marco fatally shot six postal workers in Goleta, Calif., and killed herself, the police here were alerted to her bizarre behavior, the office manager of a mental health clinic said.

The manager, Darlene Hayes, who works at Cibola Counseling Services here, said she saw Ms. San Marco, 44, alone in a post office parking lot, kneeling at her car and talking to herself.

When she asked whether Ms. San Marco was all right, Ms. Hayes said, Ms. San Marco replied, "They pray before they get in."

Ms. San Marco told Ms. Hayes that she was talking about her brother and her sister, who she said were there with her.

Ms. Hayes, who has worked at mental health clinics for 18 years, called the police because she thought Ms. San Marco needed immediate psychological attention. After waiting several minutes, Ms. Hayes left the post office, anticipating that the police would help Ms. San Marco obtain a mental health evaluation.

"It seemed liked she was acting delusional," Ms. Hayes said. "I wanted the police to make contact with her and hold her for 24 hours so they could determine whether she needed a physician."

Lt. Maxine Spidle of the police said the department had no record of Ms. Hayes's call.

Ms. Hayes's encounter was hardly unique in this ramshackle dust-swept strip of a town near Milan, where Ms. San Marco had lived for the last two years. To her neighbors, she was the woman who shouted furiously to herself, who ordered food at restaurants and bolted out the door before eating it, who knelt in prayer at the roadside and who peeled off her clothes in random parking lots.

Nobody knew where she came from or what she was doing here. People just knew there was something wrong.

"She would just come in here and stare at me," Sonya Salazar, who works in Milan Village Hall, said. "We knew she had mental problems. We just felt sorry for her."

Not everyone here had unsettling encounters with Ms. San Marco. For more than two years, Abel Ortega delivered propane gas to her. Mr. Ortega said she was polite and paid her bills promptly. Still, he said, he could not help noticing her behavior.

"We'd see her praying by the road, or talking to herself," he said. "She had this imaginary friend."


Ex-postal worker in rampage had history of bizarre behavior

Alburquerque, N.M. Jennifer Sanmarco, the ex-postal worker who police say killed five workers and herself at a California mail processing plant, had a history of bizarre behavior while living in New Mexico during the past two years.

In July 2004, she applied for a business license to start a publication called "The Racist Press," Terri Gallegos, deputy clerk for the city of Milan, said in a telephone interview.

During the meeting, Sanmarco engaged in constant conversation with herself - "not just mumbling to herself, but real audible, like she was arguing with someone but there was no one there," Gallegos recalled.

Sanmarco answered questions, but "any time someone was not talking to her directly, she was off in her own little world," Gallegos said.

Officials later filed a complaint with authorities claiming Sanmarco harassed a worker during another visit to the office.

Police in nearby Grants talked to Sanmarco last June after someone at a gas station called to complain of nudity, Police Chief Marty Vigil said. Sanmarco was dressed when officers arrived.

"We stopped her on a complaint of nudity and warned her about state law. ... We basically told her not to be doing that and sent her on her way," Vigil said.

Authorities said Sanmarco, 44, opened fire Monday night at the Goleta, Calif., mail facility where she had worked before being given a disability retirement in 2003 for an unspecified psychological reason.

She had a post office box in Grants and an address in nearby Milan and was seen as recently as last week driving in the area.

Gallegos said she dealt with Sanmarco often in the past 18 months. She once came in to register a business that made cat food and wanted to see a particular employee. On other visits, she would stand and stare at the worker, Gallegos said.

In March, Sanmarco made a rude allegation about the employee, and the clerk's office called authorities.

Milan Police Chief Jerry Stephens went to Sanmarco's home but didn't find her. He said he never talked to her and no further incidents were reported.

"We weren't sure what she was going to do next," Gallegos said. "She never got violent with us, but she was pretty rude sometimes. At other times she was perfectly fine with us and was normal."


More questions than answers on what led ex-postal worker to kill

Goleta, California. - When neighbors and co-workers saw Jennifer San Marco mumbling and fighting with herself, they did what most people do when someone looks mentally ill.

They avoided her, hoping she'd go away.

About two years ago, San Marco did just that, leaving her job at a Goleta mail facility because of psychological problems, according to postal officials. She sold her nearby Santa Barbara condominium and moved to New Mexico - where her isolation ensured no one would see the signs that might have portended a grisly return to her former workplace.

Investigators searched San Marco's rural New Mexico home Thursday for some clue about what led her to fatally shoot an ex-neighbor, six postal employees and herself late Monday in what was thought to be deadliest workplace shooting ever perpetrated by a woman.

What is clear is that her mental descent began sometime after she joined the Postal Service following a brief stint as a police dispatcher.

Her bizarre behavior continued in Milan, N.M., a city of 2,500 people 70 miles west of Albuquerque.

She harassed employees at municipal offices, becoming so fixated on one female that other workers would warn the woman when San Marco was coming so she could hide.

"Usually if she didn't see this one employee she would leave ranting and raving," said Milan village manager Carlos Montoya. "I could see her making gestures and just acting oddly. We never saw her with anybody. She was always alone."

Most of her family was located in New York, including a brother who was "pretty much in shock" when told of the events, Santa Barbara County Sheriff's Department Sgt. Erik Raney said Thursday. A cousin in Santa Barbara hadn't had contact with San Marco for more than a year, said Raney, the department's spokesman.

The family of the neighbor San Marco killed, Beverly Graham, said the two women often argued over San Marco's habit of singing loudly at the rear of her condo, near the front of Graham's condo.

At work, San Marco was known for making racist comments, said former postal facility worker Jeff Tabala.

Police in New Mexico say San Marco, who was white, distributed a publication called "The Racist Press." The newsletter included error-laden explanations of various world religions and a confusing theory linking the U.S. government to "Son of Sam" killer David Berkowitz, the Ku Klux Klan, and racist murders.

"I don't advocate crime, and it is not my intention to sound sympathetic to it," the newsletter states. "Most people do not want to be the victim of crime."

Though all of San Marco's victims except for Graham were members of racial minorities, Santa Barbara County Sheriff Jim Anderson said investigators have no indication the killings were racially motivated.

It's unclear when San Marco's mental problems took hold. In 1995 she was healthy enough to pass a psychological exam and be hired as a dispatcher for the Santa Barbara Police Department.

She left after just four months, but police Lt. Paul McCaffrey said turnover is high among dispatchers and San Marco's departure was not related to any performance issues.

San Marco also passed a background check to become a part-time employee at the Goleta mail sorting center. Tabala described her as standoffish but said initially she didn't show any signs of mental illness.

That changed. On Feb. 5, 2001, sheriff's deputies removed her from the center and took her to a mental health facility in Ventura for three days of assessment.

She returned to work, Tabala said, but several employees told him she was talking to herself and making racist remarks. He and a union shop steward talked to management, and her job ended soon after that, Tabala said.

In 2004, she showed up at the Milan village offices, paying a $35 fee to sign up for a business license for "The Racist Press." The employee who helped her, Deputy Clerk Terri Gallegos, said she didn't inquire about the title because San Marco made her uncomfortable.

In late 2004, San Marco returned to the village office, this time to get a business license to sell cat food. She was denied, however, when village officials realized she lived in an unincorporated area of Cibola County.

After the rejection, San Marco began making frequent visits to the office, Montoya said. She became fixated on a female employee, and at one point loudly accused the employee of having slept with someone. That prompted the office to file a police report accusing San Marco of verbal harassment.

Last June, police in nearby Grants talked to her after someone at a gas station called to complain of nudity. San Marco was dressed when officers arrived.

San Marco grew more and more unkempt and withdrawn over the course of her visits, Montoya said.

"Her hair looked like, one time, she cut it with a hacksaw or something," he said.

When Montoya last saw her, about two weeks ago, she had a buzz cut.

The new haircut may have helped San Marco gain entry to her old workplace. When she arrived there late Monday, the sheriff said, her former co-workers barely recognized her.


Santa Barbara mass killer had descent into madnes

Santa Barbara, California. - The woman who gunned down seven people, including six postal workers, had bounced from job to job before suffering an apparent breakdown and descending into homicidal madness, it was reported Friday.

The Santa Barbara News-Press examined employment records and interviewed acquaintances of Jennifer San Marco, detailing her life up until Jan. 30, when she killed a former neighbor at a Santa Barbara condominium and then went on a shooting rampage at a Goleta mail sorting plant before killing herself.

San Marco, 44, had worked at the plant until strange outbursts prompted her to be relieved of duty and granted a disability retirement about three years ago. She received disability checks in New Mexico when she drove back to California to kill her ex-colleagues, authorities said.

Investigators said San Marco apparently believed she was the victim of some Postal Service conspiracy but she left no will or suicide note. A diary of more than 100 pages kept meticulous track of perceived slights and offenses she received from people but didn't illuminate why she went on the killing spree.

"There's nothing in her writings that correlates to this crime," said Lt. Gary Kitzman, a Santa Barbara County sheriff's detective.

San Marco showed no signs of mental illness until about four or five years ago, acquaintances said. She was born in New York and attended Brooklyn's Edward R. Murrow High School, whose alumni include actress Marisa Tomei and rap musician Adam Yauch of the Beastie Boys.

She later attended Brooklyn College and studied natural resources management at Rutgers University in New Jersey but didn't graduate.

In 1989 she came to California, where after studying she was hired as a guard at medium-security Chuckawalla Valley State Prison in Blythe. She quit two days before her probation period ended, said Lt. Steve Sapp, a corrections officer at Chuckawalla.

"She didn't tell us why," he said, recalling her as a "good officer."

Over the next few years, San Marco held a number of jobs, including Santa Barbara police dispatcher but quit after a few months.

"She found that job really hard and stressful," said Chandos Hoffman, her former landlady.

In 1997 she began working nights at the Goleta mail sorting plant and bought a condominium. She later took a second job serving lunch at a high school but quit after less than a year in 2000.

Around that time, neighbors said San Marco appeared to have some kind of breakdown.

She would scream, shout death threats and yell profane rap lyrics, according to former neighbor Jeannie Steen.

San Marcos began getting tattoos and showed them to Steen. When she didn't react, Steen said the woman walked around her in a circle and then spit on the ground.

"The passion of her anger is hard to describe," she said. "It was so frightening."

The Postal Service placed San Marco on medical retirement in early 2003. In July, she sold her condominium and told people she was going to visit a sister on the East Coast.

Her car broke down in Grants, N.M. She stayed and got a house. Locals remember seeing her walking around talking to herself, sometimes dropping to her knees in the road to pray. She got into confrontations and once was admonished by police for driving around half-naked.

Auto body shop owner John Phillip said she talked about the Postal Service having mistreated her.

"She never talked about anything violent," Phillip said. "But she did say things like 'I hope they pay' ....She just never said anything about killing."

One day, he was disturbed to see her show up with her head shaved. She had missed some spots, where long hair hung in patches, and she had freshly cut tufts of hair on her shirt.

"She said, 'I'm going to be gone for a while,' and that's it," he said.

"She needed help," he said. "And I guess she didn't get it."


Investigators confirm 7th slaying linked to Calif postal killer

The Mercury News

February 1, 2006

GOLETA, Calif. - Investigators tracking the path of an ex-postal worker who carried out a deadly attack on a mail-sorting facility determined that a former neighbor slain at a condominium was also a victim of the suicidal rampage, authorities said Wednesday.

Authorities here and in New Mexico described past bizarre behavior by Jennifer San Marco, and an ex-colleague said she was prone to racist remarks, but her motive remained a mystery as a sixth postal worker died of wounds and confirmation of the link to the ex-neighbor's death raised the number of San Marco's victims to seven.

The former neighbor, Beverly Graham, 54, was found dead in her condominium Tuesday, along with several 9 mm shell casings, Santa Barbara County Sheriff Jim Anderson said.

"The shell casings found match those found at the postal distribution center," he said.

The sheriff said neighbors of Graham told investigators they heard the sound of gunfire on Monday sometime between 7:15 p.m. and 8:15 p.m. The postal center attack began just before 9 p.m.


Six Dead, One Critical in Calif. Shooting

The Houston Chronicle

February 1, 2006

GOLETA, Calif. - When sheriff's deputies were called to take Jennifer Sanmarco from her job at a mail sorting facility here two years ago, it was because her colleagues feared she might hurt herself. But when Sanmarco returned this week, it was her former colleagues she was bent on attacking.

Interviews with authorities in this picturesque coastal community and with people in New Mexico, where Sanmarco moved in 2004, give a picture of a woman exhibiting increasingly bizarre behavior after losing her job.

"We weren't sure what she was going to do next," said Terri Gallegos, deputy clerk for the city of Milan, N.M., where Sanmarco applied for a business license in 2004 for a publication called "The Racist Press" that she said she planned to launch. Another time she said she wanted to register a cat food business.


Sixth Shot Postal Worker Dies of Injuries

ABC news

February 1, 2006

Monday night, Sanmarco fatally shot six postal employees at the mail processing plant before committing suicide in what is believed to be the deadliest workplace shooting by a woman. One of the victims had been hospitalized in critical condition after the attack but died of her injuries Wednesday, hospital officials said.

Authorities said it was unclear whether Sanmarco targeted specific employees at the postal center, but U.S. Postal Inspector Randy DeGasperin said "chances are" she knew the people she was shooting at.