The California Highway Patrol issued an alert Thursday morning urging officers in several Southern California counties to be on the lookout for the onetime officer and Navy lieutenant who allegedly threatened police officers and their families in a lengthy letter complaining of his treatment by the Los Angeles Police Department.

CNN: California police look for ex-cop suspected in shootings

Dorner blamed the retired officer for bungling his appeal to get his job back, according to a letter he wrote complaining of mistreatment by the LAPD.

CNN: STORY HIGHLIGHTS

The next day he wrote a letter complaining about lack of cooperation.

WSJ: Cello's Golden Age Comes to a Close | J��nos Starker | By Stuart Isacoff