"The Los Angeles County District Attorney's Office requested the Board of Supervisors continue to keep secret a report that details how probation officers supervised a gang member charged with the murder of a Whittier Police Officer. Mejia was under County supervision by probation officers when Whittier Police Department Officer Keith Boyer was shot to death on February 20 at the scene of a car crash. 

A second Whittier Officer, Patrick Hazell, was wounded in the shootout that happened hours after police said Mejia murdered his own cousin in East L.A.. Mejia, an admitted gang member, had been arrested and jailed at least five times in the ten months between his release from state prison and murders.

Each time Mejia was arrested he spent only a few days in jail while under the supervision of County probation officers, according to booking records. The secret report is said to detail how carefully the probation officers kept tabs on Mejia, and why efforts were not made to impose a more significant consequence for the repeated arrests..."......