Pearl Harbor ship traffic was halted temporarily today after a loud noise on an Army vessel, which was initially thought to be a possible explosion, led to a response by security forces and federal fire units.

Maj. Lindsey Elder, a spokeswoman for the 8th Theater Sustainment Command, said in a release that at about 12:25 p.m., Army personnel who were working on and near an Army logistics support vessel, the General Brehon B. Somervell, LSV-3, at Alpha pier at Joint Base Pearl Harbor-Hickam, reported a “loud, undetermined noise.”

“Maintenance personnel are conducting inspections to determine the cause of the noise. Currently all personnel are accounted for and no injuries have been reported,” Elder said. “The Army appreciates the quick response by the (joint base) first responders who are participating in the ongoing inspections.”

A later release said divers had found no damage to the LSV-3.

As of 5 p.m., all first-responders had departed, Elder said. “We have not identified the source of the loud noise felt and heard by the crew, but will continue to assess.”