The Navy captain, who was removed from his command of a coronavirus-stricken aircraft carrier, has tested positive for the COVID-19 virus.

Two Naval Academy classmates of Capt. Brett Crozier confirmed the diagnosis to the New York Times. Crozier started showing symptoms before his ouster on Thursday, the classmates said. It’s unclear when he was tested for the virus, and he’s being quarantined at Naval Base Guam.