Mercer County, Pa. - A portion of I-80 Westbound in Mercer County is closed Sunday afternoon after a multi-vehicle crash.

Pennsylvania State Police say it happened near the Ohio state boundary line.

One lane is open while the accident is cleared from the scene.

Police say at least one person was taken to the hospital.

State police are being assisted by The Shenango Township Police and Fire Departments.

It is unknown at this time what caused the crash.