AN EERIE video appears to show a giant "disc-shaped" UFO hovering over a town, prompting panic about an alien invasion.
The night-time footage of the unidentified flying object surrounded by a glowing halo was posted online.
Unnerved neighbours have been speculating about what the mystery craft could be - with some people suggesting alien intruders.
The slow-moving apparition was filmed in Tamaulipas in north-eastern Mexico.
Reports suggested the UFO was also spotted in the neighbouring states of Nuevo León and Coahuila.
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TikToker Marcella Guzman shared the 17-second clip online where it went viral, attracting more than 4.5million views and almost 5,000 comments.
Marcella wrote: "Has anyone else seen this somewhere?
"That thing that you see there began to make a circle and disappeared, to later become a very small star and continue advancing."
One local joked, "It was me travelling with the Guardians of the Galaxy" - referring to the sci-fi comic book and movie series with stars including Chris Pratt and Karen Gillan.
Another commenter wrote: "The existence of aliens is confirmed!"
Another claimed: "I knew they were real."
But someone else remarked: "If aliens exist they would already have attacked us."
French military chiefs were last month forced to reveal details about secret hypersonic weapons tests after bizarre sky trails sparked wild UFO theories.
The zig-zagging patterns were spotted above Spain in Catalonia, Navarra and Aragon as well as Toulouse in France on June 26.
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Also last month residents were left stunned after claiming to have seen a bizarre UFO with spinning green lights circling the night skies in the United States.
Multiple people reported spotting the mysterious rotating spectacle above Middletown in Ohio.
Meanwhile, a family in Las Vegas in Nevada called police claiming towering aliens "with shiny eyes" had crash-landed in their back garden shortly after a mysterious blue UFO was filmed falling from the sky.
Several people across not only Nevada but also eastern California and Utah also reported seeing a flash, according to the American Meteor Society.