Boxing fans are convinced a 'time traveller' was among the crowd at the MGM Grand for Mike Tyson's fight against Peter McNeeley in 1995.
Tyson destroyed McNeeley in his first fight after spending three years in prison.
The heavyweight bout lasted just 89 seconds as 'Iron' Mike won via disqualification after McNeeley's manager entered the ring.
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A moment from the Las Vegas clash, however, has been scrutinised by fight fans after what HBO cameras picked up outside of the ring.
As Tyson prepares to start the fight, a spectator holds up what looks like a smartphone vertically to take a picture.
The first smartphone wasn't available until 1996 when Nokia dropped the Nokia 2110.
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Nowadays, the market leaders in mobile phone development are Apple and Samsung, with sleek designs.
It's completely different to what's shown in the video, with the device resembling a brick.
Inside Edition's YouTube video has over 1 million views, with the debate raging in the comments section.
One user wrote: "I’m surprised the government hasn’t done a Men In Black and erased our memory of this."
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A second commented: "I remember watching this live and wondering what it was."
A third added: "Has the time traveller pulled the wool over everyone's eye?"
A fourth said: "Whoever filmed this needs to upload it."
The popular broadcaster went on to debunk the myth with an explanation of their own.
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Inside Edition believes the device to be an early form of the Dycam Logitech camcorder.
Snopes went even further by suggesting it could even be a form of Casio camcorder.
The website, known for busting popular conspiracy theories, said: "Although the photographic device seen here does resemble a type of camera phone not sold until several years after 1995, it also resembles any one of a number of handheld cameras that were in fact widely available in 1995.
"The resolution and size of the original video make it difficult to determine specific features of the device glimpsed here, but we found a number of cameras that are both similar to what's seen in the video and were commonly available in 1995, most notably the Casio QV-10A, the Casio QV-100 and the Logitech Fotoman."
Topics: Mike Tyson, Boxing
Daniel Marland