Peter Marquez, 47, was killed during an armed robbery at the Walmart where he managed a shift in Phoenix near 75th Avenue and McDowell Road in the early morning hours of April 7, 2012. Inside the store two employees were moving cash into a shopping cart when an armed man, described as white or Hispanic in his 20s or 30s with a thin build and wearing a dark gray long-sleeved hoodie, blue jeans and dark shoes, confronted them and seized the cart.

Marquez was outside the store when he and another employee ran toward the entrance to intervene. As the suspect exited with the cart the robber raised a handgun and shot Marquez. The gunman grabbed some of the money and fled on foot into a nearby residential area. Marquez was taken to a hospital and died of his injuries one day before his 48th birthday.

Surveillance images were released and Phoenix police asked the public for help, but the suspect has not been identified and the case remains unsolved. He was survived by his parents, two daughters and two grandchildren. Does anyone have information about the man seen in the surveillance images or who might have been in that neighborhood that morning?