Pennsylvania authorities are investigating Thursday as to why an unmanned drone crash landed near a Pennsylvania elementary school.

The Lebanon Daily News identified the 375-pound drone as a RQ-7 Shadow, operated by the Pennsylvania Army National Guard. A military official called Wednesday afternoon's incident a hard landing, but the drone was apparently run over by a car. 

Guardsmen reportedly retrieved pieces of the 11-foot aircraft from the front of Lickdale Elementary School, which is outside Harrisburg. The drone reportedly lost power at some point during the flight. There were no injuries and the drone was destroyed.

A school official told that the students had already left the school at the time of the crash. 

A public affairs officer told the paper that they were conducting a training exercise at nearby Fort Indiantown Gap.

Fox News' Edmund DeMarche and the Associated Press contributed to this report