A jogger was struck by a Montgomery County school bus in Rockville, police said.

About 2:30 p.m. Tuesday, a 42-year-old man was jogging north on the sidewalk next to the southbound lanes of Shady Grove Road. The jogger entered the road at the intersection of Shady Grove Road and Darnestown Road and was struck by a bus, which was traveling eastbound on Darnestown Road, according to Montgomery County police.

The jogger was taken to a hospital with potentially life-threatening injuries. The bus driver was not injured, and the vehicle did not have any passengers, police said.

The circumstances surrounding the crash are under investigation.