Officials did not release any details at the time. But a senior Navy official with knowledge of the matter said the Navy was investigating reports that the platoon held a Fourth of July party in which a senior enlisted member of the platoon raped a female service member attached to the platoon, another SEAL made unwanted sexual contact with a second female service member and some team members consumed alcohol against regulations.

The official, who spoke on the condition of anonymity to discuss a continuing investigation, said no one had yet been charged.

When the entire platoon invoked the right to remain silent, commanders outside the team decided to send the whole platoon home.

Navy SEALs at Coronado, Calif., said removing a team’s top three leaders, known as the triad, is uncommon, but expected when a team has so many problems. Many longtime Navy officers think the firings are only the beginning of a larger house cleaning in the SEALs.

The problems in Foxtrot platoon are the latest in a series of reports of misconduct for the SEAL teams. Two SEAL members and two Marines were charged in the death of a Green Beret who was strangled in 2017 during a hazing incident while the commandos were on a secret deployment in Mali. One of the SEAL members pleaded guilty and was sentenced in May.