Aliens secretly implant microchips inside people who have encountered extraterrestrials.
Aliens allegedly implant microchips into abducted humans
Luis Elizondo - who once headed a US Government investigation into UFOs - has made the claims and explained that he has even touched one of the "slimy" microchips himself.
The expert - whose new book 'Imminent' contains some astonishing claims about aliens - said: "I once handled one of these implants myself, provided to me by a hospital in the Department of Veterans Affairs, where it had been removed from a US military service member who had encountered a UAP (Unidentified Anomalous Phenomena).
"The material, no longer or wider than a joint of one of your fingers, looked like a microchip encapsulated by a slimy semi-translucent casing of tissue.
"Under a microscope it was still moving somehow."
Elizondo alleges that the US Government possesses some of the alien microchips from crashed "non-human" spaceships but the Pentagon has not commented on his claims.