Santa Ana, California — A man involved in a brutal jail attack has been sentenced to a decade in federal prison following his conviction for a violent crime tied to racketeering activities. Robert Amezcua, 54, was sentenced on Tuesday by U.S. District Judge Fred Slaughter after being found guilty in January of this year.
The attack at the Orange County Jail’s Theo Lacy Facility occurred on December 31, 2019, when Amezcua and another inmate assaulted fellow inmate Michael Cooper. Prosecutors reported that during the attack, Amezcua delivered approximately 20 blows to Cooper, while an accomplice used a razor blade to inflict life-threatening injuries. Despite the severity of the assault, Cooper managed to survive, raising questions about the ongoing violence within the facility.
Amezcua was among 31 individuals indicted in 2022 as part of a larger investigation into the local chapter of the Mexican Mafia, which is known for orchestrating violent activities from behind bars. He faced multiple charges linked to a federal racketeering case that highlights the gang’s influence over prison operations and its reliance on intimidation and violence to maintain control.
Co-defendant Mher Darbinyan, 50, who also participated in the attack, received a 30-month federal prison sentence earlier this May. Another co-defendant, Robert Martinez, 43, of Placentia, is scheduled to face trial in August on charges that include his involvement in the jail assault.
Out of the 31 defendants in the RICO indictment, only four have been convicted at trial, with 16 others entering guilty pleas. Trials for three more defendants are set for July, while another eight will see their cases heard in August. This ongoing legal battle underscores the relentless pursuit by law enforcement to dismantle organized crime within California’s correctional facilities.
Prosecutors indicated that the attack on Cooper was not merely a spontaneous act of violence. Testimony revealed that reputed Mexican Mafia leader Johnny Martinez had ordered the hit on Cooper due to internal conflicts, including Cooper’s unauthorized attacks on gang members and suspected cooperation with law enforcement. The tension reached a boiling point, leading to Cooper being targeted not once, but twice—in both January 2018 and the New Year’s Eve incident in 2019.
As this case continues to unfold, the impact of gang dynamics within the prison system remains a critical concern for officials. Advocacy groups are calling for comprehensive reforms to address not only the immediate threats of violence but also the systemic issues allowing such criminal enterprises to thrive behind bars.