Anthony Casso

Anthony Salvatore Casso (May 21, 1942 – December 15, 2020), nicknamed "Gaspipe", was an American mobster and former underboss of the Lucchese crime family. 
Casso was known as a "homicidal maniac" in the Italian-American Mafia. 
He is suspected of having done dozens of murders, and had confessed to involvement in between 15 and 36 murders.
Following his arrest in 1993, Casso became one of the highest-ranking members of the Mafia to turn informant. In 1998, sentenced him to 455 years in prison for racketeering, extortion, and murder.
Casso died on December 15, 2020 while in prison in Tucson, Arizona from COVID-19 at the age of 78.