William Curtis Sanderbeck, 46, was the victim of a deadly beating behind a strip mall on South Clinton Street in Chicago on July 17, 2017. According to witnesses and surveillance footage, multiple men attacked Sanderbeck during an altercation that included throwing him against a wall, beating him with a stick and stomping on his head. He was robbed during and after the assault and was taken to a hospital; he died of his injuries on August 14, 2017.

Investigators recovered a stick broken in two at the scene and found Sanderbeck’s blood on the stick and on clothing worn by those involved. The attack reportedly began after a dispute while the group had been drinking, possibly over an offensive remark by Sanderbeck. The assault only ended when a security guard arrived; an ambulance was called and police later detained several people. One person named Jones later testified about the sequence of events.

Anyone who witnessed the July 17 altercation or has information about those present is asked to come forward.