A woman who was driving the wrong way on Interstate 70 in downtown Topeka collided head-on with a police car. No one was seriously injured.

Topeka police say the woman drove east for about 9 miles in the westbound lanes of the interstate early Friday. She eventually hit a semi-trailer truck on its side and then collided with a car driven by a Kansas Capitol police officer.

The woman was taken to the hospital with minor injuries. The police officer was not injured. The highway was shut down for about an hour.

An investigation into why the woman was driving the wrong way is continuing.