A US Air Force spokesman confirmed an unarmed Minuteman III missile was launched at 10.10am BST (2.10am Pacific Time) on Wednesday from Vandenberg Air Force Base in California.
A statement released by the Air Force, declared the test launch showed the US is "safe, secure, effective and ready to be able to deter, detect and defend against attacks on the United States and its allies”.
But it insisted the test was not a response to North Korea’s recent ICBM launch last Friday.
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In theory, it is thought the US and North Korea – which are around 8,000km apart – could strike each other with an ICBM.
Speaking earlier US Air Force spokesperson Captain Mark Graff said the missile test would “assess the reliability of our ICBM force in order to maintain a credible nuclear deterrent capability”.
South Korea also tested a bunker-destroying missile during military drills with the US.
GETTYNorth Korea's first ICBM launch earlier this year