The US official speaking on the condition of anonymity informed that the missile had been fired near Hawaii today, when a missile defence system failed, Good to Seo reports.
They said the defence missile SM-3 Block IIA had been deployed from an Aegis Ashore site in Hawaii with the hope of hitting another missile fired from an airctraft.
However, it missed the target and the mock missile fired in the war game continued towards its target.
The Missile Defense Agency did not comment on the outcome of the test but confirmed that one had taken place.