The incident happened at 10:30 p.m. on Saturday night inside the Studio 7 Restaurant on the 200 block of South 60th Street.
Police say a 46-year-old man was sitting inside the restaurant when two men who were being chased ran inside.
Click here to view the surveillance video
Seconds later, the suspect runs in after them and fires one shot inside the restaurant, hitting the wall next to the man.
The gunman then fled the restaurant in an unknown direction.
There were no injuries reported.
Police describe the suspect as a black male, 20 to 30 years-old with a thin build and possibly unshaven. He was wearing a dark zip-up hooded sweatshirt with white strings, dark colored pants and dark colored sneakers.
Anyone with information on this shooting is asked to call police at 215.686.TIPS (8477) or text a tip to PPD TIP (773847).