Three men who had escaped from a prison in Grenada and were accused of hijacking an American couple’s yacht to flee have been charged with their murder, the police said on Thursday.

The couple, Ralph Hendry, 66, and Kathy Brandel, 71, went missing while sailing off the coast of Grenada. They had been spending the winter cruising in the Caribbean in their catamaran called Simplicity, which was found abandoned in neighboring St. Vincent and the Grenadines on Feb. 21.

There was no indication in the latest police statement that the bodies of the couple had been recovered as of Thursday.

Trevon Robertson, 23; Atiba Stanisclaus, 25; and Ron Mitchell, 30, face two counts of “capital murder by intentionally causing the death of Ralph Hendry and Kathleen Brandel,” the Royal Grenada Police Force said.

The authorities from police forces in Grenada and St. Vincent and the Grenadines have given different ages and name spellings for the escapees.

The men were also charged with escaping lawful custody, housebreaking, robbery and two counts of kidnapping; Mr. Stanisclaus is also facing a rape charge, the police said, but no details were offered on those accusations. The three men made their first court appearance on Thursday, and are due back on March 27. The Royal Grenada Police Force did not immediately respond to a request for comment.