The US military has shot down an unknown object flying in US airspace off the coast of Alaska on the orders of President Joe Biden, White House officials said.
The object was flying at about 40,000ft and posted a "reasonable threat" to the safety of civilian flights, said John Kirby, White House National Security Council spokesman.
He described the object as roughly the size of a small car. It was the second time in a week the US military had downed some type of flying object over the US.
