Washington: An advanced Standard Missile-3 ballistic interceptor failed to hit its target in its first test launch conducted over the Pacific Ocean near Hawaii, the US Defense Department said.

The SM-3 Block 1B interceptor missile was launched on Thursday from a US Navy vessel about 90 seconds after the firing of a short-range ballistic missile target, but the target was not intercepted, the US Missile Defense Agency, a unit of the Pentagon, said.

The agency will conduct "an extensive investigation to determine the cause of the failure to intercept," it said in a statement.

According to the Pentagon, the SM-3 Block 1B is a different model from the Block 2A, a type that is under development by Japan and the United States, while technologies are partly shared.

A Pentagon official said, however, it is unclear how the failed test will affect the development of the Block 2A missile.

(Agencies)