The popular sitcom set in the '70s ran from 1998 to 2006.
While a lot is still unknown, it is believed the women were drugged before they were sexually assaulted by Masterson.
The LAPD did not share a lot of information about the case, but did release this statement:
The Los Angeles Police Department Robbery Homicide Division, Sexual Assault Section, is conducting an investigation involving the actor Danny Masterson. Three women have come forward and disclosed that they were sexually assaulted by Masterson during the early 2000's.
Actress Leah Remini and her A&E special, "Leah Remini: Scientology and the Aftermath" may have helped the women come forward about the sexual assault.
The report was written by Tony Ortega, a longtime reporter on Scientology and former "Village Voice" editor.
According to Masterson's representative, Jenni Weinman Voake, these allegations are just meant to draw up publicity and attention to Remini's "anti-Scientology television series."
The statement read:
We are aware of [alleged victim's] 16-year-old allegations. It was only after [alleged victim] was in contact with Leah Remini that she made allegations of sexual assault by Mr. Masterson. The alleged incident occurred in the middle of their 6 year relationship, after which she continued to be his longtime girlfriend. Significantly, during their long relationship she made numerous inconsistent claims that she was previously raped by at least 3 other famous actors and musicians. When Danny ended the relationship she continued to pursue him, even making threats to beat up his current wife Bijou Phillips unless she left him. In fact, we are informed by the Church that the only demand [alleged victim] made of the Church after Danny broke up with her was asking for their help to intervene so the breakup would not be permanent. We are aware also that approximately 14 years ago a woman referred to in the blog made allegations of sexual assault and that the LADP [sic] interviewed numerous witnesses and determined the claim had no merit. Based on reading the anti-Scientology blog that posted this story, these false allegations appear to be motivated to boost Leah Remini's anti-Scientology television series since [alleged victim] only came forward after connecting with Leah Remini.
In short, Masterson's representative is painting a picture of the victim that represents her as possibly a liar for claiming other "famous" actors and musicians raped her, as well as a jealous ex-girlfriend.