Fontana golf course shooting: Armed suspect killed was off-duty LASD deputy

An off-duty deputy with the Los Angeles County Sheriff's Department was shot and killed by police on a Fontana golf course after an alleged domestic violence incident Tuesday. Neighbors believe the off-duty deputy was having a "mental health crisis" before the fatal encounter, according to reports.

Police were called to a home in the 16000 block of Colonial Drive just after 3:45 p.m. One witness said that a man inside the house was talking or arguing with someone when they started shooting at the walls of the home.

When officers arrived at the home, they said the suspected shooter, later identified as 45-year-old Alejandro Diaz of Fontana, left the home with two guns and ran to the Sierra Lakes Golf Club nearby.

"He started shooting. Shooting up everything. Scaring the golfers, shooting at police. It was bad," said Myesha Dowe.

Officials said a short time after officers confronted Diaz, he was shot. He was taken to the hospital where he died from his injuries. An autopsy is pending.

No Fontana officers were injured.

A Fontana PD official said it's unknown if anyone other than Diaz and the officers were on the golf course at the time of the shooting.

The San Bernardino County Sheriff’s Department is handling the investigation, which remains ongoing. 

Anyone with information on this incident is urged to contact the Specialized Investigations Division at 909-890-4904. Callers wishing to remain anonymous should contact the We-Tip Hotline at 1-800-78-CRIME (27463) or go to