State police at Frackville reported on two crashes investigated by troopers over the past weekend, both occurring on Interstate 81.

A one-vehicle crash occurred on Friday in Ryan Township. Troopers said Christopher R. Kroznuski, 24, of Saint Clair, was driving a 2005 Toyota Camry northbound in heavy rain when he attempted to change lanes from the left to the right. He lost control of the car by hydroplaning. The car started to spinand then rolled over. The Camry continued traveling north and left the road on the right side and came to rest on its roof on the right shoulder.Kroznuski was injured and taken to the Lehigh Valley Hospital, Pottsville Campus, by Shenandoah ambulance.The second crash occurred around 9 p.m. on Saturday also in Ryan Township. Troopers said Roberto A. Antigua, 67, of Hazleton, was driving a 2005 Ford Explorer southbound in a heavy rainstorm. The rear tires were worn down past the thread-wear bars, troopers said, causing Antigua to lose control. The Explorer slid across both southbound lanes and went onto the left berm, where it hit a shallow ditch and an embankment. The Explorer then rolled over onto its roof.Rescue personnel had to use hydraulic extrication equipment to free Antigua and his passenger, Matilde E. Antigua, 69, same address, from the vehicle.The driver was not injured, but his passenger was transported to the Lehigh Valley Hospital, Pottsville Campus, by Ryan Township ambulance, for treatment of injuries. Ryan Township Fire Company volunteers assisted at the scene.