At approximately 9:25 p.m., a woman was walking home on the 1400 block of West Byron Street, between Janssen and Greenview, when a mugger put a gun in her stomach and demanded her purse, said authorities.
The thief was described as a tall, black male, 25 to 30-years-old, with a thin build.
The suspect was wearing a white T-shirt and red plaid shorts.
Investigators said the robber stole a black leather purse containing the victim's cell phone, ID, and various credit cards.
According to an initial police dispatch report, the offender may have fled the scene in a white vehicle that was double-parked in the area.
If you have any information regarding this crime, please contact the police, immediately.