Charlie Sheen is being investigated by the Los Angeles Police Department for allegedly threatening his former fiancee, Scottine Ross, the Los Angeles Times reports. She claims Sheen threatened her with violence on multiple occasions. Ross, a former porn star, previously accused Sheen of assault, false imprisonment, failing to tell her he was HIV-positive, and more in a civil suit, according to NBC News. In connection with the new threat charges, which constitute a felony, police served a search warrant at the offices of the National Enquirer. The magazine published an audiotape it claims features Sheen confessing to threatening to kill Ross. Ross and Sheen broke up in 2014. (More Charlie Sheen stories.)