His name is written Sergey Yarovoy, or Sergei Yarovoi, in Latin script and Сергей Яровой in Russian. He lived in the Karaganda region of Kazakhstan.
In 1990 Yarovoy was convicted of rape and sentenced to three years in prison. In 1994 he was convicted again, of rape and murder, and sentenced to 15 years in prison. The court that passed each sentence is not on record, and the charge wording of both convictions is not on record.
In 2004 he was released on conditional early release for good conduct. The decision body and its date are not on record. His time at liberty was short: the offenses for which he was later convicted began in 2006.
From 2006, over a period of about three years, women and girls in the Ust-Kamenogorsk area, in East Kazakhstan, were the victims of the offenses for which he was later convicted. Police named Yarovoy as a suspect in 2009. The names of those who died are not on record. A forensic psychiatric examination found him sane and able to answer for his actions. The investigation lasted about a year and a half.
The case was heard by a jury court in Ust-Kamenogorsk. The trial was closed to the public, and the verdict was read in the spring of 2011. The jury found him guilty of five murders, with other charges. He was sentenced to life imprisonment. The exact legal wording of the charges and of the sentence is not on record.
His appeals, if any, are not on record. His present custody is not on record beyond the life sentence passed in 2011.
The verdict covers five murders. Larger totals have been put forward, but no conviction for any other killing is on record.
1990: convicted of rape; sentenced to three years.
1994: convicted of rape and murder; sentenced to 15 years.
2004: released on conditional early release.
2006: the offenses for which he was later convicted begin around Ust-Kamenogorsk.
2009: police name him as a suspect.
Spring 2011: a jury court in Ust-Kamenogorsk finds him guilty; he is sentenced to life imprisonment.