According to WPVI, the accident occurred on Route 30 at Route 896 around 8 am Wednesday.
Authorities say the crash happened when a vehicle crashed with a tractor-trailer hauling a large pre-fabricated home then spun and struck a school bus. The impact caused the school bus to overturn. A fourth vehicle, a small SUV marked as a construction escort vehicle, then struck the tractor-trailer.
The vehicle responsible for initiating the chain-reaction accident fled the scene, and police are currently in search of the vehicle.
The school bus was carrying students between the age of 13- and 16-years-old. 14 of the students were transported to Lancaster General Hospital as was the school bus driver. At least one of the students was airlifted to the facility.