Troopers have arrested a man and a woman accused of damaging at least 14 vehicles, including a State Patrol car, by throwing rocks onto them from a railroad trestle over Interstate 5 near Lakewood, Wash., as a part of a bizarre stripping game.

Trooper Guy Gill says 23-year-old Joshua N. Sizemore and 18-year-old Amanda L. Madison were tossing baseball-sized rocks from the trestle early Monday. Sizemore, of Tacoma, and Madison, of Lakewood, were booked into the Pierce County Jail in Tacoma, Wash., for investigation of malicious mischief and second-degree assault.

Troopers on the ground were assisted by a State Patrol airplane that captured video of two people throwing rocks from the trestle. Investigators say Madison was in her underwear when the couple were arrested.

Investigators say the two were playing a stripping game.

One person was injured when a rock crashed through the window and bruised his arm. He did not need to be hospitalized.