The Los Angeles Police Department is reaching out to the public for assistance in identifying further potential victims of a USC graduate student accused of drugging and sexually assaulting women.

At a press conference on Wednesday, Deputy Chief Alan Hamilton revealed that Sizhe Weng, a 30-year-old citizen of China, allegedly committed these assaults between 2021 and 2025.

Authorities believe Weng used “intoxicating substances” to carry out the assaults.

While Hamilton did not specify the drugs involved, he noted their effects closely resemble those of Rohypnol, commonly known as “roofies.”

Hamilton indicated that the current number of suspected victims is in the mid-single digits. However, he anticipates this number could increase as more individuals step forward.

The Los Angeles County District Attorney’s Office issued a statement noting that Weng is “accused of raping three women after administering 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.