Unresponsive plane crashes off the coast of Jamaica

The small unresponsive plane that flew south over the United States into the Caribbean Sea has crashed off the coast of Jamaica, according to the Federal Aviation Administration.

F-15 pilots tracking the unresponsive plane could see, before the small plane's windows frosted, a pilot slumped over, a NORAD official said. The official said one or two other people are believed to be on board, though the number has not been confirmed.

The pilot of the unresponsive plane stopped responding to radio calls at about 10 a.m. ET, the FAA said.