A string of recent alley fires in the Lakeview neighborhood may be the work of a serial arsonist.
Police say the fires were set in garbage cans, vehicles and a garage between the hours of 11 p.m. and 5 a.m.
A person on a bike also was reported near the fire locations.
Police bomb and arson investigators are actively patrolling alleys in the 44th Ward.
Police ask neighbors to be aware and call 911 to report any suspicious activity.