A Santa Ana gang member and associate of the Mexican Mafia prison gang has been sentenced to 10 years in federal prison for his role in a violent jail attack that left the victim with a slashed throat.
On February 3, 2026, Robert Amezcua (54), also known as “Flaco,” a member of a Santa Ana-based criminal street gang, was sentenced to 120 months in federal prison following his conviction for committing a violent crime in aid of racketeering, including attempted murder and assault with a deadly weapon.
On December 31, 2019, Amezcua participated in a coordinated assault on another inmate at the Theo Lacy Facility in Orange. During the attack, Amezcua delivered more than 20 blows to the victim while a co-conspirator used a razor blade to slash the victim’s throat. The victim survived the assault.
In January 2024, a federal jury found Amezcua guilty following a three-day trial. The case is part of a larger federal racketeering investigation targeting members and associates of the Mexican Mafia and affiliated Southern California street gangs. Amezcua is one of 31 defendants charged in a 33-count federal grand jury indictment…