Italian people who died in prison custody

Luigi Lucheni (April 22, 1873 – October 19, 1910) was an Italian anarchist and the assassin of Empress Elisabeth of Austria.

Donato Bilancia (10 July 1951 – 17 December 2020) was an Italian serial killer who murdered seventeen people – nine women and eight men – on the Italian Riviera in the period from October 1997 to April 1998.Bilancia's inconsistent modus operandi made him difficult to identify and capture. There were no obvious links between the majority of his murders. He chose most of his victims at random, across a vast area of Northern Italy, and became a synonym for fear among the people living along the Italian Riviera. He was given the nicknames Mostro della Liguria ("The Liguria Monster") and L'assassino dei treni ("Killer on the trains").
Initially attributed with only nine homicides by the Italian police, Bilancia later confessed to having killed eight other people. With a sentence to 13 terms of life imprisonment, and no possibility of release, Bilancia has been defined by some newspapers as "the worst serial killer in the history of Italy". Despite confessing to the killings, Bilancia never explicitly regretted his crimes, claiming that he did not consciously commit them because he was "possessed" by a disease. Bilancia died on 17 December 2020, in prison, from COVID-19.

Roberto Succo (3 April 1962 – 23 May 1988) was an Italian serial killer who committed several murders and other violent crimes mostly in Italy and France in the 1980s.

Michael del Marco Lupo (19 January 1953 – 12 February 1995) was a serial killer originally from Italy, who was active in the UK. He operated from the Yves Saint Laurent boutique in Brompton Road, London during the 1980s.