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Hollywood train wreck Charlie Sheen was caught on video smoking crack and performing oral sex on another man in 2011, the same year he was diagnosed with HIV, according to an online report Monday.

The former “Two and a Half Men” star smoked a crack pipe before grinning for the camera and then pleasuring his male lover, said the website RadarOnline, claiming it viewed a bootleg copy of the tape.

The video had been part of a $20 million lawsuit against Sheen alleging he gave his sex partner herpes, the site said. The lawsuit was eventually settled out of court for millions of dollars, according to Radar.

An attorney involved in the lawsuit, Keith Davidson, disputed Radar’s claim that the “alleged video” had anything “to do with the above referenced lawsuit which was filed and subsequently dismissed more than five years ago.

“Though there was video evidence involved in the aforementioned case, that video evidence did not come close to portraying what you have described,” Davidson said in a statement.

“Furthermore, there was but one copy of that case related video evidence. That sole copy of the video evidence was irretrievably destroyed.”

The website quotes from the “J. Roe v. John Doe” lawsuit saying an “A-List celebrity,’’ identified by sources as Sheen, “entered into a nefarious plot designed to lure Plaintiff into his luxurious hotel room to serve his prurient desires.”

Sheen allegedly told the man he had “no venereal diseases,’’ and the pair then watched porn and engaged in “mutual oral copulation, mutual self-gratification, rubbing and massaging each other, play-wrestling, licking and (unprotected) intercourse.”

Sheen was given the original video and two other sex tapes involving himself as part of the settlement and ordered them destroyed, Radar said. Radar said it saw a bootleg copy made off the original.

Sheen had met the man in Vegas in April 2011.

The “Wall Street” actor has said he only found out he was HIV-positive sometime after early May of the same year.

Sheen speaks out on the “Today” show: