UPDATE: McKnight has reopened at Nelson Road.
An accident on McKnight Road is causing heavy traffic delays.
A multi-vehicle accident involving a bus has closed the road north from the Park North heading toward Ross Park Mall at McKnight and Nelson Roads.
The southbound lanes toward Pittsburgh are reduced to one lane.
There is no word of any injuries or if any students were on the bus at the time.
KDKA Radio has reached out to Ross Township Police.
