Knoxville police are investigating an armed robbery at a McDonald's off Emory Road.

According to police, a man robbed a person at gunpoint at 409 East Emory Road around 3:30 p.m. Sunday. 

The victim said he was sitting in the parking lot with a woman when a man approached them. The suspect pulled out a handgun and demanded the man to hand over his money.

The suspect ran off with the victim's cash. The suspect was last seen heading toward I-75 in a dark-colored minivan.