KINGSTON, Jamaica — Shadowed by two U.S. fighter jets, a small plane with its windows frosted over and its pilot apparently incapacitated flew a ghostly 1,700-mile journey down the Atlantic Coast and beyond before finally crashing in the waters off Jamaica. The fate of the two or more people aboard was not immediately known.

Maj. Basil Jarrett of the Jamaican Defense Force said the plane went down about 14 miles (22 kilometers) northeast of the northern coastal town of Port Antonio and the military sent two aircraft and a dive team to investigate the area where the plane went down.

A U.S. C-130 aircraft is also flying over the crash site and a U.S. Coast Guard cutter is on the way, according to Guard Petty Officer Jon-Paul Rios.

“None of us have found anything at this time,” Rios said.

The single-engine turboprop Socata TBM700, which took off at 8:45 a.m. EDT from the Greater Rochester International Airport in New York, was carrying a prominent real estate developer and his wife, the couple’s son said.

Rick Glazer said that his parents, Larry and Jane Glazer, were both licensed pilots. He said he can’t confirm they were killed, adding that “we know so little.”