Cmdr. Bradley Swanbeck was fired due to a loss of confidence in his ability to command, according to SUBFOR officials.
While officials declined to say what caused the loss of confidence, SUBFOR spokeswoman Cmdr. Sarah Self-Kyler confirmed that the Naval Criminal Investigative Service is investigating allegations of personal misconduct against Swanbeck.
Swanbeck has been reassigned to Submarine Squadron Four, Self-Kyler said. He had taken command of the Montpelier in April 2016.
Cmdr. Jeffrey Tamulevich was fired this week over "evidence of misconduct involving alleged fraternization," Navy officials said .
Capt. Todd Moore has assumed command of the Montpelier until a permanent relief is assigned, she said.
Swanbeck’s firing is the second command relief of June, according to information provided to Navy Times.