Summary
Authorities have confirmed that human remains found during the search for a missing University of South Florida doctoral student belong to Nahida Bristy. The remains of another student, Zamil Limon, had been located earlier. The case has rocked the campus — and it’s still unfolding.
How the remains were identified
Investigators used DNA testing, dental records and clothing seen in surveillance footage to confirm Bristy’s identity. Limon’s remains were earlier found near the Howard Frankland Bridge and were also identified through forensics.
How they were found
A pair of kayakers fishing noticed something suspicious in the mangroves after one of their lines snagged a bag in the water. When they investigated further they discovered a body and contacted law enforcement. Limon’s remains were found separately in a black trash bag along the highway near the bridge.
The suspect and charges
Police have charged 26-year-old Hisham Abugharbieh, a former USF student and one-time roommate of Limon, with two counts of first-degree murder along with multiple additional charges including tampering with evidence, false imprisonment and storing remains improperly. Prosecutors say he was arrested after a brief standoff and is being held without bond.
What investigators say happened
According to court filings and investigators, Abugharbieh gave Bristy and Limon a ride from Tampa to Clearwater on April 16 — the last day they were seen alive. He initially denied having them in his car but then changed his account after data linked their phones and his vehicle to Clearwater.
Investigators allege he bought trash bags and cleaning supplies that same night, disposed of items including a phone cover that belonged to Bristy, and moved boxes to a compactor dumpster the next day. Forensic testing reportedly matched Bristy’s DNA to material found in his residence, and personal items belonging to Limon were recovered from a dumpster.
Digital evidence and broader questions
Prosecutors also say Abugharbieh queried an AI chatbot about putting someone in a dumpster. That claim has drawn additional attention: state officials have said they will expand an ongoing inquiry into the technology company whose chatbot was used, as part of a broader look at potential misuse of AI tools.
Campus reaction and memorial plans
University officials described the news as devastating. The USF president issued a statement expressing deep sorrow and noted that both students had made meaningful contributions to the campus community. Student groups announced a vigil and a GoFundMe was set up to assist the families with expenses.
Who they were
Bristy and Limon, both 27 and originally from Bangladesh, were doctoral students at USF. Bristy was pursuing a PhD in chemical engineering and celebrated academic milestones on social media; posts show her singing, playing guitar, and sharing pride in research accomplishments. Limon had previously dated Bristy, according to school groups.
Where the case stands now
The motive behind the killings has not been publicly established. Investigators say they are continuing to gather evidence and that prosecutors brought multiple charges based on the findings so far. Court records list the full set of accusations and local authorities say the investigation remains active.
A final note
This is a tragic situation for two young people and their families, and it’s still developing. If you’re on campus or in the community, expect more updates from law enforcement and university officials as the legal process moves forward.
