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 skydiving aircraft carrying 15 people crashed at Cross Keys Airport in Williamstown, New Jersey, on Wednesday, officials said, sending 14 people to local hospitals and leaving three in critical condition.

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!"