US Air Force veteran and former intelligence officer David Grusch has made wild claims that aliens have been captured by humans and it has happened multiple times

Humans have captured at least ten aliens, according to a former US intelligence officer.

US Air Force veteran David Grusch, a former member of the National Geospatial Intelligence Agency and National Reconnaissance Office, claims ET "pilots" were seized after a number of UFO crashes on Earth running into "double digits".

Though there had been some "interactions" with humans, most aliens were a "variety" of biological "entities" of which boffins had no understanding of the "physiology at all".

David Grusch was on the Defense Department's Unidentified Aerial Phenomena Task Force (file) (Image: CQ-Roll Call, Inc via Getty Images)

Earlier this year, Grusch stunned politicians when he claimed the US Government had been covering up UFO crashes for decades.

He claimed whistleblowers had told him they had worked on secret projects aimed at reverse-engineering recovered alien craft wreckage - and "non-human biologics" had been found at crash sites.And he's since appeared on Joe Rogan's podcast.

After the host asked him how many biological entities had been found, Grusch said there were "a variety and we have a certain number of different things".

Claims suggested at least 'ten aliens' have been caught (stock) (Image: Getty Images)

"But the total numbers of what’s interacting with us on earth, I mean nobody knows that," he said.

"I talk to people who are familiar with the biological analysis and everything. So we have some idea, not a complete picture because it’s like, you know, you’re looking at it, it’s like, well I don’t even understand the physiology at all, it’s like what the heck, it’s way different."

While he admitted he had not seen first-hand evidence of the craft or bodies he said he had spoken at length with dozens of senior intelligence and military officials who had come forward to him.

Grusch says is in possession of "double digit" numbers of crashes (file) (Image: Getty Images)

He claimed the US Government was in possession of "double digit" numbers of crashed UFOs but could not disclose the exact number.