NORFOLK, Va. (AP) — Authorities say a civilian employee was critically injured aboard the USS San Francisco.

Norfolk Naval Shipyard spokeswoman Terri K. Davis says in a release that the woman was injured Tuesday morning, and is listed in critical condition at a local hospital.

The cause of the injury has not been released, and remains under investigation. Davis says the ship is in the process of being converted into a Moored Training Ship.

Davis says all relevant agencies have been notified, including the Occupational Safety and Health Administration. No further information has been released.