De’Mar De’Angelo Bester was 24 when he was shot and killed during a robbery on the 1200 block of 11th Street in Rock Island, Illinois, on August 23, 2016. The killing remains unsolved and no arrests have been announced.

His family has kept the case in public view: each year they display billboards at the intersection of 11th Street and 18th Avenue, and his mother, Othea Stevenson, has worked with the city on community projects in his honor and contacted an outside agency for help in pursuing the investigation. The Rock Island Police Department continues to ask the public for information.

If anyone saw or heard anything related to the robbery on August 23, 2016, or has information that could help investigators, please come forward.