HAWTHORNE, Nev. (MyNews4.com & KRNV) -- A military investigation has concluded an accidental explosion that killed seven Marines during a nighttime training exercise was the result of human error and insufficient training.
Marine Spokesman Lieutenant Adam Flores said on Wednesday that the investigation found the deadly March 18 explosion in Hawthorne was triggered when a Marine dropped a second round into an already-loaded mortar tube during a live-fire exercise. Two officers and a non-commissioned officer were relieved of command following the explosion.
Those killed ranged in age from 19 to 26. Seven additional Marines and a Navy sailor were also wounded in the blast.