Updated at 6:41 a.m.

The accident on Interstate 270 south near Route 109 in Clarksburg has moved out of the main roadway, but police said delays still continue, with traffic backed up for several miles.

Original post at 6:11 a.m.

Police said Thursday an accident involving three vehicles is blocking one lane on Interstate 270 south near Route 109 in Clarskburg.

The left lane of the roadway is blocked and police said it is not known how long the closure will last.

Traffic was backed up for at least eight miles along Interstate 270 southbound in the early morning.