The surveillance video shows an armed robbery outside of a gas station at 99th Street and Western Avenue on December 29, 2021 at about 11:15 p.m.
Police believe the same suspect is responsible for another armed robbery in the same area on February 20 at 11:39 p.m.
The suspect is described by police as a 5'8-5'10, heavyset man, wearing a black hooded sweatshirt, black ski mask, black and gray plaid jacket with ripped chest pockets, black sweatpants and tan construction boots.
Anyone with information is asked to contact Area 2 detectives at (312) 745-0620.