The Navy has canned the officer in charge of the unit whose two small boats and 10 sailors were seized by Iran in January, marking the service’s first public disciplinary action in an international fracas that threatened the U.S.-Iran nuclear deal.

The Navy Expeditionary Combat Command removed Commander Eric Rasch for a “loss of confidence” in his ability to command, according to a Navy statement cited by the Navy Times.

At the time of the Jan. 12 seizure, Rasch was serving as the No. 2 officer of Coastal Riverine Squadron 3, a unit in charge of small, coastal vessels. Rasch’s boss, Commander Gregory Meyer, has been has been put on “administrative hold,” meaning his career is in limbo while the Navy’s official probe into the seizure continues.

The episode was a major embarrassment for the U.S. Navy, and the service has taken its time to investigate what took place. The 10 sailors aboard two riverine boats apparently strayed into Iranian territorial waters off Farsi Island in the middle of the Persian Gulf as they tried to sail from Kuwait to Bahrain.

Accosted by vessels manned by Iran’s Islamic Revolutionary Guard Corps, the Iranians videotaped the nine American men and one woman on their knees. Then they were taken to the heavily-defended Iranian island where they were held until a flurry of high-level diplomacy lead to their release the next day. While in custody, one of the sailors apologized on videotape for the snafu, which led Iran to award medals to its sailors who seized the Americans.