One officer was killed and the other wounded while they were trying to help a man who had been in a traffic accident in Whittier.
A police officer has died and another officer was wounded following a shootout with a suspected gang member Monday in California, PIX11 sister station KTLA reports.
The second officer and the male suspect were in stable condition.
It was unclear if Mejia's releases were related to any of the measures.
Stay with KCRA for updates. One driver - in a stolen auto - opened fire on officers.
Police returned fire, wounding the suspect. He said Boyer was a mentor to others in the department and had recently talked about retiring.
The Whittier Police Dept. has about 125 sworn officers who patrol Whittier and Santa Fe Springs.
The identity of the shooter had not been released, but deputies said he was a known gang member.
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Boyer was "the best of the best", Police Chief Jeff Piper said at an afternoon news conference.
Officer Boyer, 53, was a 28-year veteran of the department.
The suspected gunman was identified as Michael Christopher Mejia, 26, according to the Los Angeles County Sheriff's Department.
It all started when police responded to a auto accident involving the suspect and another vehicle.
The chief also said Boyer's killing showed how California's laws make the streets less safe. "Right now, we are putting people on the streets who are not ready to be on the streets".
In 2010, Mejia was convicted of robbery and sentenced to four years in prison, according to court records. "People don't want to follow rules".
Boyer was a divorced father of grown children, a drummer who played in bands for nonprofit events and a "personal friend of mine for 25 years", Piper said, adding he had occasionally played guitar with Boyer in that band. "You know it's really hard for me to hold back my tears because all of us have been grieving since 10 o'clock this morning and I didn't think I had any tears left, but we're going to get through it".
In Los Angeles County, the jail population has decreased, from 18,500 inmates just before Proposition 47 passed to about 16,500 inmates in November.