A scientist who worked with the Pentagon's UFO program for decades says he has seen the evidence that the US is hiding the bodies of four different alien races that crashed on Earth.

Dr Eric Davis, an astrophysicist specializing in advanced aerospace propulsion, said he has personally seen classified photos and records from the US government which allegedly confirm the existence of extraterrestrial life found in wrecked UFOs.

This included at least four distinct species which the US now has stored in top-secret facilities, however, Davis noted that the locations of the corpses changed during the Obama Administration.

Davis specifically mentioned alien races known as the Grays, the Nordics, a race of insectoids which look like a human-sized praying mantis and a species called the Reptilians, due to their humanoid-lizard-like appearance.

'There's a minimum of four that we know of. I've seen the evidence, I've seen the records,' Davis told NewsNation's 'Katie Pavlich Tonight.'

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