Milwaukee Police responded to a restaurant in the 3400 block of W. National Avenue around 8:10 p.m. on December 23 for an armed robbery. An employee of the restaurant produced a handgun and chased the fleeing robber on foot, exchanging gunfire with the suspect. The suspect is still at large as of this writing and has not been identified. We have no evidence to indicate that anyone was struck by gunfire. The scene is still under active investigation by MPD detectives as of this report.