Authorities investigate possible crude rocket attack at U.S. Army base in Japan

Japanese authorities are investigating a possible attempted rocket attack at the U.S. Army’s Camp Zama in Japan early Tuesday morning.

Three explosions were heard at 12:43 a.m. local time. Investigating authorities found two pipes pointed at the facility. A projectile was found roughly 660 meters away, NBC News reported Tuesday.

There were no injuries reported after the explosions, NBC reported.