The Hillsborough County Sheriff’s Office confirmed on Saturday that 26-year-old Hisham Abugharbieh, Limon’s roommate, has been charged with two counts of first-degree premeditated murder with a weapon. The discovery of Limon’s remains on the Howard Frankland Bridge on Friday marked a dark turning point in the case, while the search for Bristy continues under increasingly dire circumstances.
A Promising Future Cut Short
Both victims were highly regarded members of the USF graduate community. Zamil Limon, 27, was a dedicated PhD student specializing in geography, environmental science, and policy. His research was at the cutting edge of technology, focusing on the use of generative AI to monitor and preserve shrinking wetlands in South Florida. His brother, Zubaer Ahmed, described him as a "joyful, promising young researcher" who dreamed of returning to Bangladesh to inspire the next generation as a university professor.
Nahida Bristy, an equally talented scholar, was pursuing her doctoral degree in chemical engineering. An alumna of Noakhali Science and Technology University in Bangladesh, she was remembered by her former professors as a "talented and promising student" whose loss is described as "irreparable" to both the university and the nation.
The two shared a close bond; Limon had recently expressed to his family his intentions to marry Bristy, praising her talent, her singing, and her kind nature. They were last seen near the USF campus on April 16, 2024, before a family friend reported them missing the following day.
The Investigation and the Suspect
The investigation quickly centered on Hisham Abugharbieh, a former USF student who shared an off-campus apartment with Limon. While Abugharbieh initially spoke with detectives, his cooperation ceased as the evidence against him began to mount.
The breakthrough in the case occurred on Friday morning when law enforcement was called to a residence for an unrelated domestic violence incident. This led to a high-stakes standoff where Abugharbieh barricaded himself inside his family’s home, eventually requiring the intervention of a SWAT team and crisis negotiators.
In addition to the first-degree murder charges, Abugharbieh faces a litany of serious allegations:
- Unlawfully moving a dead body
- Failure to report a death with intent to conceal
- Tampering with physical evidence
- False imprisonment
- Battery
Sheriff Chad Chronister addressed the community’s concerns, stating, “This is a deeply disturbing case that has shaken our community and impacted many who were hoping for a safe resolution.”
A History of Domestic Conflict
Court records reveal that Abugharbieh was not unknown to law enforcement. In 2023, he was arrested twice on battery charges, although those cases were eventually dropped. His own brother had previously filed for a domestic violence injunction, alleging that Abugharbieh had attacked him and their mother. Despite the family’s pleas to extend the injunction to prevent him from returning to the home, the request was denied in May of last year.
The Hillsborough County State Attorney’s Office has indicated that they will argue for Abugharbieh to remain in custody without bond. During his initial court appearance, he was seen in a safety smock, shackled at the hands and feet, as prosecutors prepared to present evidence that he remains a significant danger to the community.
The Search for Nahida Bristy
While the recovery of Zamil Limon’s body provided a tragic form of closure for his family, the fate of Nahida Bristy remains officially unconfirmed. However, investigators have delivered devastating news to her family in Bangladesh. Based on the significant volume of blood evidence found in the apartment shared by Limon and the suspect, authorities believe she is likely deceased.
Currently, the Hillsborough County Sheriff’s Office Marine and Dive teams are scouring the waters surrounding the Howard Frankland Bridge. Detectives are working "tirelessly and relentlessly" to find her and provide her family with the answers they deserve.
Community Support and Next Steps
The University of South Florida has moved quickly to support the grieving families and the international student body. President Moez Limayem confirmed that the university is in direct contact with the Bangladeshi Embassy and the Consulate General.
“We are doing everything we can to assist in this matter,” Limayem stated, emphasizing that the incident occurred off-campus and that there is no ongoing threat to the current student population.
As the legal process unfolds, the families of Limon and Bristy are left to navigate an unimaginable "deep pain." For a family that was expecting a joyful reunion in Bangladesh this summer, the focus has now shifted to a quest for justice and the truth.
Stay Informed and Support the Community
The loss of these two brilliant minds is a tragedy for the global academic community. As the search for Nahida Bristy continues and the legal proceedings against Hisham Abugharbieh move forward, it is vital to stay informed on the latest developments.
If you have any information regarding this case, please contact the Hillsborough County Sheriff’s Office at (813) 247-8200.
To stay updated on this developing story and other local news, subscribe to our newsletter or follow our coverage of the Tampa Bay criminal justice system. Your engagement helps ensure that the stories of victims like Zamil and Nahida are never forgotten.

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