FILE PHOTO: U.S. President Donald Trump speaks to reporters aboard Air Force One on his return from a state visit in Britain, September 18, 2025. REUTERS/Kevin Lamarque/File Photo

WASHINGTON (Reuters) -U.S. President Donald Trump on Saturday warned the Venezuelan government that it must accept the return of all prisoners whom he said Venezuela had forced into the U.S., or else "the price you pay will be incalculable."

Trump issued the threat in a post on his Truth Social platform. He did not elaborate on which prisoners he was referring to, except to say that some were "people from mental institutions." He also did not specify what action he might take.

(Reporting By Matt Spetalnick; Editing by Leslie Adler)