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This undated booking photo provided by the Los Angeles County Sheriff s Department shows Michael Christopher Mejia, 26. Authorities have identified Mejia as the suspect they say fatally shot Whittier, Calif., police officer Keith Boyerand injured another as the officers responded to a traffic accident Monday, Feb. 20, 2017. Authorities say Mejia is a known gang member who was recently released from jail. (Los Angeles County Sheriff s Department via AP)(The Associated Press) prev
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This undated photo provided by the Whittier Police Department shows Whittier police officer Keith Boyer. On Monday, Feb. 20, 2017, Boyer was answering a report of a traffic accident when he was shot and killed, authorities said. (Whittier Police Department via AP)(The Associated Press)