Prosecutors in Tompkins County, New York, reopen a criminal investigation tied to allegations that a former Cornell University student was drugged and sexually assaulted by seven members of the Chi Phi fraternity at the fraternity house in 2024.

The allegations come from a civil lawsuit filed by the woman, identified as “Jane Doe” in the court filings. Multiple outlets report she alleges she was pressured to ingest a substance identified in the complaint as ketamine, and that she was sexually assaulted without consent by multiple men over several hours. She says she reported the alleged assault to Cornell police about three weeks after the incident, and that a university internal review followed.

According to the district attorney’s office, the earlier criminal investigation did not proceed because evidence was initially considered insufficient for charges. After the civil lawsuit was filed, the DA’s office says it reviewed the matter again and reopened the probe, reflecting the development of the case.

Outlets also report Cornell investigated through its civil rights and student conduct processes, with the university stating privacy limits prevent sharing student-specific disciplinary details. Cornell says actions included penalties for some individuals and campus policy changes. Chi Phi’s national organization says it is aware of the suit, calls the allegations deeply concerning, and emphasizes fair legal process.