LENEXA, Kan. (AP) — Investigators have determined that the windshield on a Lenexa patrol cracked from a stress fracture and not from a bullet as earlier believed.

The Kansas City Star reports a stress fracture in the glass caused the rear window to shatter on the parked police car Thursday.

Authorities shut both a section of Kansas 7 for about three hours while police searched for a possible shooter after the officer reported the broken windshield.

Police said investigators determined that the stress fracture caused the window to “buckle and make a loud noise.”

They reopened the road shortly later Thursday afternoon.

During the search for a shooter, three schools in the area were placed on lock down.

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LENEXA — Authorities are investigating after a parked Lenexa patrol car was struck by a bullet.

Lenexa police reported an officer stopped on the side of Kansas 7 Highway near Prairie Star Parkway was shot at from an unknown location.

A window was broken out of the patrol car, but the officer was not injured.

At the present time we don’t know if the shot was fired from a passing vehicle or the wooded area adjacent to the highway.

K7 Highway was closed temporarily between K10 Highway and 83rd Street while officers searched the area.