The Pantagon has released 1,574 pages of real-life X-Files related to its secretive UFO programme after a four-year battle.

The Sun Online first requested a copy of all "files, reports or video files" related to the Advanced Aviation Threat Identification Program (AATIP) on December 18, 2017.

We filed an a Freedom of Information Act (FOIA) just days after the existence of the shadowy programme had been made public.

Finally after more than four years, the Defense Intelligence Agency (DIA) released more than 1,500 documents.

It includes government commissioned scientific reports and letters to the Pentagon regarding the UFO programme.

The haul includes reports into research on the biological effects of UFO sightings on humans, sets out categorisations for paranormal experiences, and studies into sci-fi-style tech.

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