U.S. officials say the Navy captain in charge of the naval station at Guantanamo Bay, Cuba, has been fired and is under investigation in connection with an alleged affair with a woman on the base and the recent death of her husband.

The Navy said Capt. John R. Nettleton was relieved of duty Wednesday due to a loss of confidence in his ability to command.

The Navy would not comment on the details of the investigation. But U.S. officials said Nettleton is under investigation in connection with the death of Christopher Tur, who was found dead in the waters west of the base by the Coast Guard on Jan. 11.

The officials spoke on condition of anonymity because they weren't authorized to discuss the ongoing investigation.