An Argentinian man showed up to his own funeral, leaving mourners bewildered as to whose body they were burying.

The Daily Mail reported the 22-year-old, who has not been named, was on a multi-day bender in Alderetes when his family wrongly identified him as dead.

His mother approached local police after hearing a man had been hit and killed by a sugarcane truck on September 18, according to La Gaceta.

She identified the body as her missing son by his clothing and distinguishing features.

But the 22-year-old disrupted his funeral with a stunning declaration that left mourners confused - “I’m alive”.

He was taken to the local police station where he confessed to have been “indulging” in a neighbouring town when the man died.

The body was eventually identified as 28-year-old Maximiliano Enrique Acosta, reported La Gaceta.

Acosta’s brother Hernán was left upset with how the local authorities had handled the death - particularly after they initially asked him to view the wrong body, prolonging his identification.

“First, they handed over the body without proper identification. Then they made me go to the morgue twice. We shouldn’t have to go through this after everything we suffered.”

Acosta was finally buried in Delfín Gallo on September 23, where mourners described him as “loved by everyone”.

The Argentine Public Prosecutor’s Office confirmed an investigation into the authorities’ internal practices has been opened.