A downed aircraft near Cross Keys Airport in Williamstown, New Jersey, has prompted a "mass casualty incident," Gloucester County Emergency Management said Wednesday. The officials added, "Please avoid the area to allow emergency vehicles the best access!"

The plane, a Cessna 208B, went off the end of a runway as it was taking off from a small airport in Gloucester County, according to the F.A.A. Victims were being treated at the scene, officials said.

A plane went down Wednesday afternoon in Monroe Township in Gloucester County near the Cross Keys Aiport., officials said. The Gloucester County Office of Emergency Management confirmed the downed plane in a Facebook post but did not have many details about the incident but asked people to avoid the area.