Moses Walker Jr., Philadelphia police officer, gunned down by robbers while off duty, tapes show

This photo provided by the Philadelphia Police Department shows Officer Moses Walker Jr. Walker was shot and killed, Saturday, Aug. 18, 2012, in North Philadelphia. Police said Walker had just gotten off his overnight shift and was not wearing his uniform as he walked along Cecil B. Moore Avenue, where he was shot multiple times just before 6 a.m., Saturday. Walker, 40, and a 19-year veteran of the Philadelphia Police Department, later died at the hospital.
AP Photo/Philadelphia Police Department
Officer Moses Walker Jr.
AP Photo/Philadelphia Police Department

(CBS/AP) PHILADELPHIA - Philadelphia police released two surveillance tapes this week that captures the final minutes of an a 19-year veteran officer's life before he is shot to death by two robbers. Detectives are offering an $118,000 reward as they try to track down the killers.

Both footages, released Monday and Tuesday, show the same two men police believe gunned down 40-year-old Officer Moses Walker Jr. after he finished his shift early Saturday morning.

Walker was shot in the chest, stomach and hand as he walked from his police precinct to a bus stop. He was not in uniform, but he was still carrying his service weapon when he was fatally shot.

The tapes appear to show Walker glancing over his shoulder at the two men walking behind him a few minutes before he was shot. Police believe Walker's assailants announced a robbery and then one of them shot him three times in the chest when he drew his weapon.

Police said there have been similar armed robberies in the area reported over the last couple of months and the men probably live in the area.