In audio of the 911 call released by the outlet, the caller says he, his father and brother were in their backyard working on their truck when something crashed and they felt an impact.

“We just see out of the corner of our eye something fall from the sky, and it was with lights, and when it hit there was a big impact, and we feel like an energy? And then we hear like a bunch of footsteps near us.”

“And we see there’s one, there’s an eight-foot person next to it and another inside, and he’s got big eyes and he’s looking at us,” the 911 caller said.

“They are very big. They’re like eight feet, nine feet, 10 feet. And they are not human. One hundred percent, they are not human,” she added.

Officers responded to the family’s call, but there was no sign of any creatures when they arrived. Las Vegas police said officers conducted a preliminary investigation but were unable to find anything. The case was closed as “unfounded”.

According to body camera footage obtained by USA TODAY, an officer told the family he was investigating the claims because another officer saw something in the sky matching the family’s description eight minutes earlier.

“One of my colleagues said that he also saw something fall from the sky, so I’m a little curious,” the officer said. “It’s strange the fact that our partner saw something at the exact moment,” he added.

The United States government received more than 510 UFO reports between late 2004 and mid-2022, according to a declassified version of an annual report from the Office of the Director of National Intelligence.