Last week Mexico held its first ever congressional hearing on the subject of UFOs, where UFO enthusiast and journalist Jaime Maussan produced two artefacts he claimed amounted to evidence of “non-human” life.
His appearance quickly went viral online, fuelling conspiracy theories and also drawing some ridicule.
Days later, journalists were invited to film tests carried out by Jose de Jesus Zalce Benitez, a forensic doctor with the navy.
Previous claims the pair have made about similar specimen have been dismissed by scientists as the mummified remains of humans.
In response to their appearance at the hearing, Nasa scientist Dr David Spergel, questioned why the pair did not make their data samples public.
US authorities have recently engaged with questions about unexplained sightings and in July the US Congress listened to witness testimony on unexplained phenomena.
A recent report by Nasa into hundreds of UFO sightings concluded that there was no evidence aliens were behind the unexplained phenomena.