Police believe teenagers are behind the holiday display vandalism spree that occurred in Mount Pleasant recently.

Police say stolen holiday displays were dumped outside of Westlake High School. They say a custodian, who found the decorations Sunday near the school's entrance, threw them in the garbage because he didn't know they were stolen. Police are looking into videotapes from homeowners? security systems that may help them solve the crimes.

According to police, since last Saturday there have been 13 incidents where vandals stole or damaged holiday displays from outside homes in Hawthorne, Mount Pleasant, Thornwood and Valhalla. Related Information Vandals try to steal Christmas cheer in Mount Pleasant