BARTLESVILLE, Oklahoma - One person is in critical condition after a crash involving an OHP trooper's vehicle. 

OHP tells said the trooper was in the middle of a traffic stop on northbound Highway 75 just south of Bartlesville when a driver tried to get over to the left lane and hit another vehicle already in that lane.

The second vehicle rolled while the first hit the trooper’s car. Ambulances transported several people to the hospital. 

The trooper was not in the vehicle at the time and was not hurt.