Around 1:45 a.m., a woman was robbed near the intersection of 1100 West Hollywood and 5700 North Winthrop Avenues, said police.
Authorities noted the address of occurrence as 5706 North Winthrop Avenue.
The offenders, who were described as a black female and a black male, stole the victim’s purse, said police.
The female suspect is 20 to 25-years-old, about 5’8” with “long legs” and a ponytail.
The male suspect is also believed to be 20 to 25-years-old and he is approximately 5’3”.
According to investigators, the female assailant stabbed the victim in the back with the tip of a blue and white umbrella.
The umbrella left a small puncture wound on the victim’s back, said police.
Citing police communications, the North Side muggers were last seen running northbound on Winthrop.
The victim was transported to an area hospital for medical treatment.
At the time of this report, police were canvassing the area looking for the victim's purse.