SHAWNEE, Okla. (AP) - An Oklahoma Highway Patrol trooper is hospitalized in serious but stable condition after being struck by a vehicle while helping a motorist along Interstate 40 east of Oklahoma City.

OHP Lt. John Vincent says Trooper Jason Richardson was out of his patrol car and in the median of the interstate near Shawnee just after 8 a.m. Tuesday when a vehicle went into the median and rolled into the trooper.

The trooper was taken to an Oklahoma City hospital with leg, head, and internal injuries. Vincent says the collision remains under investigation.