Police cruiser shot near Trayvon Martin shooting scene

(CBS/AP) SANFORD, Fla. - Authorities say gunfire knocked out a window on a police cruiser parked near the residential community where a black Florida teen was shot to death by a neighborhood watch volunteer.

Pictures: Trayvon Martin shooting

Sanford police told CBS affiliate WKMG the cruiser was found with at least two bullet holes Tuesday morning after witnesses reported hearing at least six gunshots. The car had been parked outside Bentley Elementary School for several weeks at the request of school officials.

Police reportedly said it was there as a visible deterrent because tour buses park during there day and night.

No one was injured by the gunfire, reports WKMG.

The school is across the street from the Retreat at Twin Lakes, where 17-year-old Trayvon Martin was shot and killed by 28-year-old neighborhood watch volunteer George Zimmerman in February. Zimmerman has claimed he shot the teen in self-defense, citing Florida's so-called "stand your ground" self-defense law.

Special prosecutor Angela Corey said Monday she will not take the Trayvon Martin shooting death before a grand jury, but that her office will continue to investigate.

Complete coverage of the Trayvon Martin case on CBS News