A Virginia State Police trooper was shot and injured Thursday afternoon on Interstate 95 in Caroline County, and a suspect also was shot, police said.

Few details were immediately available regarding the incident, which occurred about 3:25 p.m.

The trooper suffered a serious wound in his leg, but the injuries were believed to be non-life threatening, said Virginia State Police Sgt. Thomas Molnar, a spokesman. Officials did not identify the trooper, who was taken to Mary Washington Hospital, but said he was assigned to the 2nd Division, Area 5, which covers Fredericksburg, Spotsylvania and Stafford counties.

A suspect was flown to Mary Washington Hospital with life-threatening injuries, authorities said.

Officials declined to say whether a weapon was recovered at the scene or what prompted the gunfire.

The investigation shut down southbound I-95, and traffic was diverted to US 1.