3 dead, including gunman, after shooting at Marine Base Quantico Three people are dead, including a gunman who opened fire at Marine Corps Base Quantico in Virginia after shooting one person dead Thursday night. A base spokesman said the suspected shooter was found dead of a self-inflicted gunshot wound along with a second victim. Lt. Agustin Solivan said authorities entered the barracks early Friday where the suspect had barricaded himself after a fatal shooting and found him dead along with another victim. The standoff began after a shooting on the base around 11 p.m. No names have been released, but Solivan said authorities believe the suspect was a staff member at the officer candidate school at the base. Solivan says the two others killed were also Marines. The base had been put on lockdown but the lockdown has been lifted. A post on the base's Facebook page urged residents to stay inside with their doors locked and follow any instructions from the base intercom system. WUSA reports that the gunman may be a male Marine. Click for more from WUSA.