Key events in hunt for ex-LA cop, suspected killer - Article Photos 1/6

A San Bernardino County sheriff's deputy stands guard near the area where a shooting took place in Riverside, Calif, Thursday, Feb. 7, 2013. Police launched a massive manhunt for a former Los Angeles officer suspected of going on a killing spree, slaying a couple over the weekend, opening fire on two Los Angeles officers early Thursday and then ambushing two other police officers, killing one. (AP Photo/Jae C. Hong)