MICHAEL Jackson was investigated by the FBI following allegations he sexually abused two Mexican boys in the 80s, bombshell documents show.

The FBI also examined an alleged "child sex" video tape labelled "Michael Jackson's Neverland Favorites", according to documents unearthed by Sun Online.

5 Michael Jackson is the subject of controversial documentary Leaving Neverland Credit: AFP or licensors

Gavin Arvizo interview with Santa Barbara police about alleged abuse by Michael Jackson shown in Leaving Neverland doc

A witness called Los Angeles police and alleged the singer molested two Mexican boys in 1985 or 1986 but that the resulting investigation was "covered up", according to one FBI document.

The internal memo goes on to state that the witness - a book author - alleged that the two boys reported the alleged abuse to the FBI at the time but the agents closed the case because Jacko was due to receive an award at the White House from the US president.

The 1993 document, which describes the police's call to the FBI, says: "On December 27, 1993 writer received a telephone call from ... Los Angeles Police Department Sexual Exploitation of Children (SEOC).

5 This FBI memo details how Jacko was accused of molesting two Mexican boys Credit: FBI

"He advised he had been contacted by [REDACTED] who has been writing a book about Michael Jackson concerning allegation of sexual molestation of children.

"[REDACTED] advised he had information that the Federal Bureau of Investigation (FBI) in 1985 or 1986 investigated allegations against Jackson for reportedly molesting two Mexican boys."

The memo goes on to say that a Mormon FBI agent, who was special agent in charge, and a Hispanic agent investigated the incident.

The Mormon agent "did not pursue the allegations because Jackson was to receive an honor at the White House from the President," the document reads.

According to the unidentified author: "the investigation was covered up".

5 Jackson always insisted he was innocent and would never harm children Credit: AFP or licensors

5 This memo shows how FBI agents examined a "child pornography" video labelled as MJ's "Neverland Favorites"

Wade Robson claims he was he was forced to look at a Peter Pan figurine while being molested by Michael Jackson from behind

The agent who wrote the memo said he searched files for information about the allegations but "no references were found".

In another 1997 memo with the subject: "CHILD PORNOGRAPHY", the FBI describes how agents carried out in depth analysis on a VHS video cassette labelled: "Michael Jackson's Neverland Favorites An All Boy Anthology".

The memo describes how a "physical and electronic" examination of the tape "revealed it is a poor quality third or fourth generation recording".

It is unclear what exactly was on the tape but the request to examine it came to the FBI from the US Customs Service.

The documents - many of which are redacted or incomplete - were made public in 2009 as part of a secret FBI dossier on its Jacko probe.

Included in the filings is a statement from a Canadian social worker who claims that she was travelling on a train to the Grand Canyon with Jackson and his entourage and became concerned about his behaviour with a young boy identified as the star's "cousin".

5 The Canadian social worker became suspicious of how Jacko was acting with a young boy on a train she was travelling on Credit: FBI

The woman named as "P/R", a child services employee, later heard "questionable" noises coming from the pair's coach and was so worried she contacted the conductor.

The report reads: "Jackson was very possessive of boy. At night P/R heard questionable noises through the wall.

"She was concerned enough to notify the conductor of her suspicions."

Another document shows how agents were told a restraining order against Jackson - ordering him to stay away form an unidentified person - had been filed.

Agents did not know which court the order was filed at but checked all the files at New York Superior Court and could not find the restraining order.

The explosive files have been discovered following Wade Robson and James Safechuck's allegations they were repeatedly molested by the King of Pop as kids over several years - in documentary Leaving Neverland.

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The harrowing abuse claims have sent shockwaves around the world with even some lifelong fans admitting they were finally persuaded by Wade and James.

Wade, 40, claims he was abused from age seven to 14 while James, 36, who met Jacko on the set of a Pepsi ad, said the abuse started one night in a Paris hotel while he accompanied the performer on his European Tour.

The controversial documentary has been vehemently slammed by Jackson's estate who deny all claims of child abuse.