A new twist in an investigation surrounding the discovery of two "alien" corpses has unfolded, with Mexican officials investigating the man who claims he found them.
Journalist and UFO enthusiast Jaime Maussan presented the two "non-human" corpses to Mexico's congress and authorities in Peru have launched a criminal probe.
Peruvian officials are now looking into how the corpses were taken out of the country.
The small skeletons, both 60cm long, prompted proceedings in Mexico's congress last week as Maussan presented the two bodies in large wooden caskets to MPs.
Maussan, who has speculated widely on aliens, claimed the bodies were found in Peru in 2017 and described them as "non-human beings that are not part of our terrestrial evolution".
However, scientists and academics have dismissed the discoveries as yet another stunt by Maussan in what they believe is a quest to prove the existence of aliens.
Health Sciences Research director and forensic doctor Jose de Jesus Zalce Benitez conducted tests on the remains on Monday through a YouTube livestream.
Through X-rays and CT scans of the bodies, he found there was "no evidence of any assembly or manipulation of the skulls", proving the remains were not human-made.
Dr Benitez said the corpses belonged to a single skeleton and were "not assembled".
He also said that the laboratory tests have shown that ''there is no evidence of any assembly or manipulation of the skulls''.
"[They] belong to a single skeleton that has not been joined to other pieces," he said.
With elongated heads, slanted eyes and a small, upturned nose, there's a lot of resemblance to fictional depictions of aliens, however, scientists have yet to suggest that they have come from another planet.
One theory put forward by academics and archaeologists is that the remains are mummified human bodies.
Peruvian government officials believe the bodies are likely pre-Hispanic objects.
Maussan is yet to explain how he obtained the corpses but said he would reveal it all "at an appropriate time".
