A vehicle rollover is being reported on Rte. 128 North near Exit 19 with serious injuries. Medflight is heading to the scene with the highway being used as a landing zone. Police and fire personnel are on the scene, as well.
More information will be posted when it becomes available.
UPDATE: The Medflight chopper has left the scene and traffic in now moving in the southbound lane.
WCVB is also reporting that the vehicle involved was a "school van," but that the driver was the lone vehicle occupant.