UFOS buzzing warships and being reported by US pilots could be of alien origin, America's top spy chief has said in a stunning admission.

Avril Haines, the Director of National Intelligence (DNI), who oversees all 16 US spy agencies including the FBI and CIA, was speaking at the Our Future in Space event at the Washington National Cathedral.

Ms Haines was quizzed about UFOs which have become a serious national security debate in the US after years of being consigned to the dustbin of conspiracy theories.

The stunning UAP Task Force report published by the Pentagon over the summer admitted there have been unexplained encounters between the US military and mystery objects - such as the infamous TicTac.

And while the report, which analysed 144 sightings, did not explicitly spell out a possible alien connection - it did not rule it other either as the mystery continues.

Ms Haines appeared to crack the door open even further for a possible alien link at the event where she spoke alongside NASA chief Bill Nelson, leading expert Professor Avi Loeb, and the world's second richest man Jeff Bezos.

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