Bizarre looking relics found in China have fuelled conspiracy theories that ancient aliens invaded the country.

The excitement about the Sanxingdui relics comes as China is reportedly beginning its own investigation into UFOs in the wake of the US government’s probe.

The relics at the site, in Sichuan province, south-west China, were first discovered in 1929 by a local villager and date back 3000 years to the Bronze Age.

But recently the eerie looking artefacts with large pointing ears have set UFO buffs buzzing with the idea they were aliens who visited ancient China.

The growing popularity of the idea has even led to an official denial of any alien link.

"Some artistically exaggerated goddess statues cannot be said to be 'aliens,'" said Lei Yu, an archaeologist at the Sichuan Provincial Cultural Relics and Archaeology Research Institute, Global Times reports.

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