Article Photos: Key events in hunt for ex-LA cop, suspected killer 4/6

This undated photo released by the Los Angeles Police Department shows suspect Christopher Dorner, a former Los Angeles officer. Seeking leads in a massive manhunt, Los Angeles authorities on Sunday put up a $1 million reward for information leading to the arrest of Christopher Dorner, the former Los Angeles police officer suspected in three killings. (AP Photo/Los Angeles Police Department)