(Recasts with three dead, including shooter)
March 22 (Reuters) - A gunman shot dead two U.S. service members at the Marine Corps Base at Quantico, Virginia, then barricaded himself in a building and apparently killed himself, prompting a brief lockdown of the base, the Marines said on Friday.
The shooting took place late on Thursday in the vicinity of the base's Officer Candidate School, and all three people who died were identified as U.S. Marines, according to Marine Corps spokesman Sergeant Christopher Zahn.
"An isolated shooting incident has occurred at Officer Candidate School, Quantico," the base said on its Facebook page. "The suspect has been barricaded by law enforcement personnel."
The Facebook message told base residents to remain in their homes with their doors locked before the lockdown was lifted before dawn on Friday. No other injuries were reported. (Reporting by Cynthia Johnston; Editing by Janet Lawrence)