Ferguson Township police were called to the Overlook Heights area for reports of vandalism May 9 and 10.
Eleven vehicles parked on North Atherton Street, Village Drive, East North Hills Place and Curtin Street were entered and/or damaged.
Damage included slashed tires on six vehicles, scratches along the length of one car and damage to seat cushions in another.
Anyone with information is asked to call police at 237-1172.
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