The Knox County Sheriff's Office is investigating what happened to a teenager who was found unconscious next to a road in Washington.

Officials say the teenage girl was found at 9:15 Monday morning, along the West Washington Road. A passerby found the girl on the side of the road and was unable to get a response her. An ambulance was called to the scene and  EMTs determined that the girl had injuries consistent with being hit by a motor vehicle. She was taken to the hospital with serious injuries. There was no vehicle found at the scene.

Now, the sheriff's department is asking that anyone with information about this incident contact Detective Dwight Burtis at (207) 594-0429, extension 722.