The Los Angeles Police Department is asking for the public’s help in identifying additional victims of a University of Southern California grad student who is accused of drugging and sexually assaulting women.
Sizhe Weng, a 30-year-old Chinese national, is accused of assaulting multiple women between 2021 and 2025, Deputy Chief Alan Hamilton said in a Wednesday press conference.
Weng is accused of using “intoxicating substances” to facilitate the assaults.
Though Hamilton declined to name the specific drug or drugs involved, he said the effect was “very similar” to roofies, a slang term for Rohypnol.
Hamilton added that so far, the number of suspected victims is in the mid single figures, though he expects that to go up as more people come forward.
The Los Angeles County District Attorney’s Office added in a news release that Weng is “accused of raping three women after placing incapacitating drugs in their food and/or drinks.”
Thus far, Weng faces eight counts of charges including rape, sodomy and sexual penetration involving drugs or anesthesia, though Hamilton anticipates additional charges as more victims come forward.
Jail records show Weng was arrested on Aug. 28 and is being held without bail at the Twin Towers Correctional Facility. He’s due to appear in Los Angeles Municipal Court on Jan. 14, 2026.
He pleaded not guilty to all charges on Sept. 2.
“If convicted as charged, Weng faces 25 years to life plus 56 years in California state prison,” the District Attorney’s Office said. “He would be required to register as a sex offender for life.”
District Attorney Nathan Hochman added that victims locally and abroad are asked to report the alleged attacks to police.
“No one should ever have to endure the trauma of being drugged, sexually assaulted and stripped of their ability to consent,” Hochman said in the release. “Prosecutors in my office’s Sex Crimes Division and our law enforcement partners will not rest until the defendant is held accountable for these horrific acts. We want every victim to know that their voices matter and we will fight to ensure you are heard.”
Anyone with information about Weng or additional victims is asked to call investigators at 213-486-6890.
To report information anonymously, call Crime Stoppers at 800-222-TIPS (8477) or visit lacrimestoppers.org.
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