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Charles Manson used brainwashing techniques and cult ideologies from secret Scientology training to manipulate his followers into carrying out the infamous 1969 killing spree that left seven dead.

The astonishing new details emerged from a trove of never-before-seen FBI files and the Church of Scientology’s own internal documents, seized in a 1977 raid that exposed Manson’s intimate relationship with Scientology founder L. Ron Hubbard, RadarOnline.com can reveal.

In a world exclusive, a confidential Scientology report addressed to Hubbard’s wife on June 22, 1970, revealed that the church enlisted Manson during his ten-year stint at the McNeil Island penitentiary in Washington State.

READ THE DOCUMENTS HERE!

While there, Manson shared a cell with high-level Scientologist Layeyette Raimer, who put the bug-eyed cult leader through 150 hours of “auditing” — intense sessions in which participants divulge their darkest secrets as part of the church’s brainwashing.

Amazingly, the wacky Scientology tactics proved too crazy for even deranged maniac Manson.

“Manson got super-energetic and flipped out when he’d been audited, and would talk about nothing but Scientology,” the report said. “After a while, Manson was screaming to get away from his auditor.”

Prison officials grew leery of the church’s practices and eventually acted to destroy their in-cell influences — but not before Manson used the “hypnotism and black magic” to control his flock of murderous creeps.

Manson, who died Nov. 19 at age 83, went on to mastermind the 1969 killing spree that left seven dead, including pregnant 26-year-old actress Sharon Tate.

“He used Scientology and other forms of religion to gain control over people and get his followers to do what he wanted,” investigator Mark G. Hewitt, who published Charles Manson Behind Bars, told Radar.

Manson’s deep connection to Scientology is the latest revelation to come from government files obtained by Radar through the Freedom of Information Act.

Hubbard’s estranged son L. Ron Hubbard Jr. turned whistleblower in 1985. In a letter to the IRS’ Criminal Investigation Division, he confirmed: “They were well connected — Charles Manson was a Scientologist.”

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