HONOLULU (AP) — The commanding officer and executive officer of a Pearl Harbor-based submarine have been relieved of duty a month after the periscope on the USS Jacksonville collided with a vessel in the Persian Gulf.

Cmdr. Christy Hagen, spokeswoman for the U.S. Pacific Fleet's submarine force, says Cmdr. Nathan Sukols and Lt. Cmdr. Lauren Allen were relieved after a disciplinary hearing in Bahrain on Sunday.

Hagen cited a lack of confidence in the pair's leadership, but gave few details. Both have been assigned to administrative duties.

On Jan. 10, the Jacksonville hit a vessel that kept moving and showed no signs of distress afterward. A periscope was damaged, and has since been repaired.

The Navy couldn't determine the boat's purpose or country of origin before it moved on.

No one was injured.