The shooting happened at the main gate of the Camp Lejeune military base in North Carolina.
A U.S. Marine was shot and killed when a sentry's rifle went off.
A base spokesman didn't say whether the shooting was intentional or not.
(SOUNDBITE)(English) CAPTAIN JOSHUA SMITH, CAMP LEJEUNE SPOKESMAN, SAYING:
"Our thoughts and prayers are with all the families involved at this point. I just want to stress that this is being ruled an isolated incident. It's neither an act of terrorism nor an active shooter. The situation is not active, it's under control and is being investigated by NCIS."
The dead Marine was not immediately identified by officials at the base, while they notified next of kin.
