Military officials say a 14-year-old girl reported missing from her San Diego home was found in the barracks at Camp Pendleton Marine Corps base last month, and a Marine was detained briefly for questioning.

Two weeks after a 14-year-old girl’s grandmother reported that she had run away in early June, the teenager was found in an unusual location: Inside the barracks at a California Marine Corps base north of San Diego.

Federal law enforcement officials said Monday that they are investigating and had taken a Marine with the Combat Logistics Battalion 5, 1st Marine Logistics Group into custody briefly for questioning. He has since been released to his command while the investigation continues, said Marine Capt. Charles Palmer of the 1st Marine Logistics Group at Camp Pendleton, about 40 miles (65 kilometers) north of San Diego.