A man jumped the counter of the AM/PM at 7601 E. Tanque Verde Road at about 1 a.m. May 17, 2013, stabbed the clerk and fled. The clerk later died at a hospital. The attacker is in his early 20s, about 5 feet 8 inches tall with a thin build. He was wearing a gray hooded sweatshirt, dark jeans and a carrying a dark-colored backpack. The store is offering a $25,000 reward for information that leads to an arrest in the case. Detectives ask that anyone who knows the assailant call 911 or 88-CRIME.