Around 4:52 a.m., gunshots were heard on the 5900 block of North Kenmore Avenue, near Kenmore and Thorndale.
According to one 911 caller, eight shots were fired in the area.
After the shooting, one eyewitness saw a white or cream-colored Subaru wagon going southbound on Sheridan Road from Thorndale, said police.
A second bystander reported a black jeep going eastbound on Thorndale, then southbound on Sheridan Road.
One of the jeep's doors was open and there was "lots of screaming inside the vehicle" as it drove away, said police.
Six days ago, on May 22, 2012, a shooting was reported about a block north of the Kenmore and Thorndale shooting at Kenmore and Glenlake.