Charlie Sheen under criminal investigation by Los Angeles police

FILE - In this April 11, 2013 file photo, Charlie Sheen, a cast member in "Scary Movie V," poses at the Los Angeles premiere of the film at the Cinerama Dome in Los Angeles. Los Angeles police said Wednesday, April 6, 2016, that detectives are investigating Sheen in response to a criminal report filed last week and have obtained a search warrant. The website RadarOnline reported Wednesday that the warrant was served on its operators in an attempt to obtain audio in which Sheen purportedly threatens his ex-fiancee, Scottine Ross. (Photo by Chris Pizzello/Invision/AP, file)

In this April 11, 2013 file photo, Charlie Sheen, a cast member in “Scary Movie V,” poses at the Los Angeles premiere of the film at the Cinerama Dome in Los Angeles. Los Angeles police said Wednesday, April 6, 2016, that detectives are investigating Sheen in response to a criminal report filed last week and have obtained a search warrant. The website RadarOnline reported Wednesday that the warrant was served on its operators in an attempt to obtain audio in which Sheen purportedly threatens his ex-fiancee, Scottine Ross. AP

LOS ANGELES, United States — The Los Angeles Police Department has opened a criminal investigation against US actor Charlie Sheen, a spokesman said Wednesday.

Officer Matthew Ludwig told AFP the probe was launched on March 31 in connection with a case in which Sheen was listed as a suspect.

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“The Los Angeles Police Department threat management unit are the lead investigators on this case and the victim’s information is confidential,” Ludwig said, adding that a search warrant had been obtained in the case.

He did not elaborate on the nature of the probe or what prompted it, but several media reports said it was linked to claims that Sheen had threatened to kill his ex-fiancee Scottine Ross.

Variety magazine said that in an “alleged audiotape,” Sheen was apparently heard threatening to hire a hitman for $20,000 to kill Ross.

Sheen also allegedly admits in the tape to having lied to a sex partner about him being infected with HIV, Variety said.

Sheen and his publicist could not be immediately reached for comment.

The “Two and a Half Men” star was engaged to Ross in 2014 but they never married.

He revealed in an interview in November that he is HIV-positive and that his bad boy days were over.

The alleged recording obtained by police was reportedly made by a former lover who confronted Sheen after he revealed his HIV status in an interview aired on national television.

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