The shocking image is sweeping alien and conspiracy theory websites after emerging on Facebook and being reported by Diarioprimeralinea.com.ar in the South American country.
Online reports have suggested that police were called to reports of strange behaviour in the Parque Mitre area of Corrientes, before they spotted a humanoid-like being and photographed it on a mobile phone.
Debunkers have already branded it a CGI hoax, saying it is an edited version of an alien shown in the ET film Signs, starring Mel Gibson, or a still from Spanish alien horror flick Ovni.
Terry Larch wrote on mystery website Freaklore.com: “In the country of Argentina, one of the greatest alien photos ever taken has been recently captured.
“The photograph is incredible and may be the best evidence of aliens living among us yet.
” On September 13, 2017 in the area known as Parque Miter, an upright humanoid extraterrestrial was spotted and a cell phone picture was taken of it.
“Initially, a local group of teenagers reported seeing a strange looking creature wandering nearby.
“Later, a group of police officers from Commissariat arrived on the scene.
“They scoured the area, to find this unusual sight of panicked teens and an alien being.
“Once the police arrived, they wandered over slowly, approaching this strange thing.
“They soon realised that this was no human but something else entirely.
“It appeared to be a rather traditional looking extraterrestrial, typically seen in movies and drawings.”
According to reports, the “creature” fled into the Paraná River, when officers approached and they lost sight of it.
Mr Larch said: “The image is so good in fact, it does raise suspicions about its authenticity.
“Clearly, while glancing at the photograph, the shape and size of the alien is rather remarkable to see.
“It has the oval head shape and almond dark shaped eyes.