Capt. Brett E. Crozier, the Navy captain who was removed from command of the coronavirus-stricken aircraft carrier U.S.S. Theodore Roosevelt, has tested positive for Covid-19, according to two Naval Academy classmates of Captain Crozier’s who are close to him and his family.

A Navy spokesman declined to comment on Captain Crozier’s Covid status.

The commander began exhibiting symptoms before he was removed from the warship on Thursday, two of his classmates said. Captain Crozier was fired following a leak to The San Francisco Chronicle of a letter he had emailed to Navy leaders that detailed the failures on the service’s part to provide the necessary resources to swiftly move sailors off the carrier and disinfect areas on board as the virus spread through the ship.