State police at Fern Ridge are investigating a theft incident at a construction site in Monroe County.

Troopers said unknown persons stole several metal weights from a John Deere 320 tractor while parked along Five Springs Road, in Jackson Township. The theft occurred sometime between Sunday, Oct. 23, at 4:30 p.m. and Monday at 8 a.m.The tractor is owned by M.K. Contractors Inc., of Towanda, Bradford County.