The alleged alien corpses were discovered by customs authorities in Peru last year during a routine shipment search.
The Peruvian customs officials found two doll-like figures and an alleged three-fingered hand in the shipment.
The strange objects were being sent to Mexico, but officials are still in the dark over who owns them.
UFO experts immediately seized on the discovery, claiming they were proof of alien life.
However, forensic experts working for Peru’s prosecutor’s office have debunked the extraterrestrial claims.
READ MORE: Met Office verdict on blizzard this week with UK set to be colder than Iceland
Forensic archaeologist Flavio Estrada, who led the analysis, announced this week that the objects were made with paper, glue, metal, and human and animal bones.
He told reporters: “The conclusion is simple: they are dolls assembled with bones of animals from this planet, with modern synthetic glues, therefore they were not assembled during pre-Hispanic times
“They are not extraterrestrials; they are not aliens.”
During a press conference, Mr Estrada explained that the pair of two-foot-long dolls dressed in red, orange and green clothes were created from the bones of birds, dogs and other animals.
The three-finger hand, which was subjected to X-ray examinations, was “very poorly” built with human bones.
The doll-like objects made headlines last September after Mexican journalist José Jaime Maussan and some Mexican lawmakers went before the country’s congress to present two boxes of supposed alien mummies found in Peru.
The Mexican Congress ‘UFO disclosure’ event was met with widespread ridicule from social media users around the world.
In November, Mr Maussan claimed that a team of researchers who performed a DNA analysis on the figures showed 30 percent of the dolls were “not from any known species” and said that the figures were “authentic,” comprising a single skeleton.
At the time, he told reporters: “The public has the right to know about non-human technology and beings. This reality unites humanity rather than dividing us.
“We are not alone in this vast universe; we should embrace this truth.”
This comes in the same week that a video of a UFO hovering above a US military base in Iraq was released.
The strange floating ‘jellyfish’ object appeared to glide over the base toward Lake Hibernia in Iraq’s Anbar province.
The craft has dangling appendages gliding over the secure facility, where it could only be seen on infra-red cameras.
