State police at Schuylkill Haven are investigating a criminal mischief incident that occurred in Schuylkill County.

Troopers said unknown criminals used a blunt instrument to smash the back window of the 2002 Saturn L300 of Lisa A. Morgan, 20, of Ashland. They also smashed the front passenger side window. The vehicle was parked at 36 Hunter Road, in Eldred Township.The incident occurred sometime between 11:30 p.m. on Monday, Feb. 7, and 1:30 a.m. on Tuesday.