A "high-altitude object" was shot down over Alaska earlier on Friday, the White House has said.
Spokesman John Kirby said the unmanned object was "the size of a small car" and was over a sparsely populated area at the time.
President Joe Biden took the decision to shoot down the object, which was of unknown origin, Mr Kirby said.
It comes after the US shot down a Chinese balloon over its territorial waters last Saturday.
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