According to authorities, the shooting happened at about 7:30 a.m. Friday at Parkside Coney Island restaurant.
Police are asking for the public’s help in figuring out what happened.
Police said a 39-year-old man driving a gold SUV pulled into the parking lot, the passenger got out and shot the driver multiple times.
Sources told Local 4 the gunman is in his mid- to late-20s. He was seen running south toward Hill Avenue wearing a black hooded sweatshirt and tan pants.
Police say he is considered armed and dangerous.
Anyone with information is urged to contact the Highland Park Police Department at 313-852-7338.