A University of Southern California graduate student who police say is a serial sexual predator has been charged with drugging and raping multiple women as investigators look for additional victims, Los Angeles authorities said.
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Weng Sizhe, a 30-year-old Chinese national also known as Steven Weng, was arrested on August 28, though the district attorney and police just released statements about the case on Wednesday.
Weng has pleaded not guilty to eight felony counts including forcible rape and sodomy by controlled substance or anaesthesia, according to the LA County District Attorney’s Office.
Weng was held without bail and could not be reached for comment. A lawyer for him could not be found and the LA Public Defender’s Office did not immediately respond to an email asking if one of its lawyers is representing Weng.
Detectives began investigating in January after receiving information from German authorities about a potential suspect who plied women with drugs before raping them in Los Angeles, police said in a statement.
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“Evidence was recovered at Weng’s residence that corroborated his involvement in drug facilitated sexual assaults of multiple victims dating back to 2021 and continuing into 2025,” the police statement said.