From the Chicago Tribune:
Four cars were torched in a Lincoln Square parking lot early this morning, Chicago police said. It was the second time multiple cars were set on fire in the city over the last eight days, but the two incidents did not appear related.
At 3:40 a.m., a woman heard her dogs barking and looked outside to see four vehicles aflame across her rear alley in a parking lot in the 5600 block of North Western Avenue, Chicago Police News Affairs Officer Laura Kubiak said.
There were no known injuries and the fires were contained to the four vehicles, which included a Jeep, a Pontiac Grand Am, a Ford Contour and a Buick. It was not known if there were other cars in the parking lot at the time, Kubiak said.
The Chicago Police Bomb and Arson Unit is investigating.