According to the Los Angeles Times, Turscak was sentenced in 2001 to 30 years in prison for carrying out crimes while working as a federal informant.
He was recruited as part of a 1999 case that eventually brought down charges against members of the Mexican Mafia, a gang that he admitted he had joined in 1990, according to court documents.
During his time in the mafia, he said he authorized "assaults of individuals for infractions of Mexican Mafia rules," and collected "taxes" from street gangs and drug dealers in "return for Mexican Mafia protection and permission to engage in narcotics trafficking."
He also said he murdered a man in 1990 while he was in Folsom Prison, and authorized the murder of another man in 1998, according to documents.
Chauvin was hospitalized following the attack, but was said to be in stable condition as of Saturday.
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> John Turscak
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