Mangion was born in 1965 and came from Zejtun in Malta. He was known in Malta as Kalang.
Three elderly people were killed in their homes in robberies: Rozina Zammit, fifty-four, on February 8, 1984; Maria Stella Magrin, sixty-eight, on October 30, 1986; and Francesco Cassar, seventy-five, on August 16, 1998. Each was stabbed.
The 1984 killing was unsolved for a quarter of a century. He was eventually charged with all three and convicted, receiving life imprisonment on June 23, 2010. The conviction for the 1984 murder coming twenty-six years after it.
Malta is a jurisdiction of under half a million people with very few homicides, and three unsolved killings of elderly people over fourteen years is a substantial part of the island's criminal history. The accessible sourcing is Maltese press reporting of the trial.
The higher figure reflects further attributions that were not established.