MIAMI (AP) — Attorneys for a man who pleaded guilty to hijacking a passenger jet to Cuba requested a sentencing delay Thursday after federal prosecutors filed last minute classified documents in the case.

New Jersey native William Potts Jr., 57, could face up to life in prison for the 1984 hijacking of a Piedmont Airline flight en route from New York to Miami. Potts voluntarily returned to the U.S. last fall and agreed to a plea deal in May.