Ala Mahmoud was 40 when he was shot and killed on the morning of December 10, 2017, while working at a neighborhood convenience store near North 38th Street and West North Avenue on Milwaukee’s west side. Widely known by the nickname Polo, Mahmoud had worked at the store for years and was described by customers as part of the neighborhood and someone who treated people like family. Police were called at about 9:40 a.m., and Mahmoud was pronounced dead at the scene; his wife Katherine Mahmoud said he had been shot in the head.

Investigators considered robbery as a possible motive and obtained surveillance footage from the store and surrounding area as they sought to identify the shooter. No arrest was reported during the initial investigation, and the killing was later described as a cold case. The family announced a $50,000 reward soon after the homicide and more than a year later privately raised that reward to $200,000 in an effort to generate tips.

If anyone knew Mahmoud, saw activity near the store on December 10, 2017, or recognizes anyone in the surveillance images, please come forward with information.