The Las Vegas UFO mystery has deepened - as police installed high-tech cameras outside the home where residents reported seeing '10ft aliens with large shiny eyes' in their backyard 

Doug Poppa, a former police officer who has been following the story of the mysterious object falling from the sky, said it baffled him why the Las Vegas Metro Police Department placed surveillance cameras outside.

He interviewed the family who made the call - and they told him that the cops installed the camera to 'protect' them from UFO fanatics who might bother them.

Despite being skeptical, Poppa, who is a podcaster, said he now believes the family is somewhat credible. 

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