CHARLIE Sheen is the subject of a criminal investigation headed by detectives from an elite stalking unit, according to Los Angeles police.
Officer Matthew Ludwig says Sheen was listed as a suspect in a criminal investigation report received on March 31.
He declined to detail the allegations or identify the alleged victim, but he said detectives who handle serious stalking and criminal threats cases have obtained a search warrant in the case.
The celebrity news site RadarOnline reported that it had been served a subpoena from Los Angeles police for a 35-minute audio recording that is purportedly of Sheen threatening his ex-fiancee, Scottine Ross.
She performed in pornographic films under the name Brett Rossi and is suing Sheen for having sex with her without disclosing he is HIV positive.