A fire erupted Saturday evening on a Navy warship at BAE Systems' Norfolk Ship Repair facility, sending one sailor to the hospital.

The blaze broke out around 8 p.m. Saturday inside the Arleigh Burke-class guided-missile destroyer Oscar Austin, which is undergoing extended maintenance work at the 109-acre facility along the Elizabeth River, according to Lt. Cmdr. Courtney Hillson, spokeswoman for Naval Surface Force Atlantic.

The destroyer’s crew began “aggressive damage control” to battle the fire but one sailor was transported to a local hospital, treated for smoke inhalation and then released, she said.

The cause of the blaze remains under investigation and neither the Navy nor BAE has estimated the cost of the fire damage.

Contacted by Navy Times, BAE referred comment to Naval Surface Force Atlantic.