Murder Charges Filed Against Napa Man Granted Immunity Under Mental Health Laws
Just three days after being granted immunity from prosecution under California’s mental health diversion laws, a Napa man allegedly committed a brutal murder, raising serious concerns about the system designed to protect public safety.
Napa County prosecutors have filed murder charges against Ramiro Ochoa Mendoza, 36, for the killing of Noel Batres, 47, whose body was discovered under a bridge on July 3.
Mendoza, who had a history of criminal offenses and a track record of poor compliance on probation, was found mentally incompetent to stand trial earlier this year for misdemeanor charges, including violating a restraining order and resisting arrest.
Despite efforts by defense counsel to dismiss the cases, the court ordered Mendoza into a mental health diversion program with supervised release for the remaining misdemeanors, as per legislative guidelines.
However, Mendoza failed to attend his scheduled mental health diversion review and was deemed non-compliant with the program’s terms.
“Mendoza promptly failed to appear in court for his mental health diversion review and was found to be out of compliance with the diversion program,” stated the Napa County District Attorney’s Office.
Despite repeated violations and non-compliance, the court was legally obligated to dismiss charges due to Mendoza’s mental health status and the nature of his offenses.
Following recent legislative reforms, including Senate Bill 317, courts are prohibited from restoring competency in misdemeanor-only cases, even if the defendant displays escalating behavior.

Mendoza was re-arrested on July 11 and now faces murder charges with enhancements related to his prior offenses and the alleged brutality of Batres’ killing.
The case has sparked a debate about the boundaries of mental health protections and their impact on public safety.
“This case highlights the real-world impact of recent legal reforms, where courts are mandated to prioritize mental health treatment over traditional prosecution, even when defendants show unwillingness or inability to comply with court-ordered programs,” said Napa County Deputy District Attorney Katie Susemihl.

A GoFundMe campaign has been launched to assist in returning Batres’ remains to his home country of Guatemala. Batres had been a resident of Napa for 26 years.
“Noel was not perfect by any means. However, he was a wonderful, caring, gentle soul,” the page reads. “We ask that you please help us send Noel back home to be seen by his immediate family one last time before they lay him to rest.”
Mendoza is currently being held without bail at the Napa County Department of Corrections.