TAMPA, FL — A week-long search for two University of South Florida doctoral students took a harrowing and definitive turn Friday morning as authorities confirmed the discovery of a body and the arrest of a key person of interest. The Hillsborough County Sheriff’s Office announced that the remains of 27-year-old Zamil Limon were located near the Howard Frankland Bridge, ending the hopeful wait for his safe return but intensifying the urgent search for his companion, 27-year-old Nahida Bristy, who remains missing.
🚨MISSING USF STUDENTS UPDATE🚨#teamHCSO has located the remains of Zamil Limon, 27 and arrested Hisham Abugharbieh in connection to the disappearance of Limon and Nahida Bristy, 27.
Detectives are actively following investigative leads in the area surrounding the Howard… pic.twitter.com/BPgzMXl1cp
— HCSO (@HCSOSheriff) April 24, 2026
The suspect, identified as 26-year-old Hisham Saleh Abugharbieh—Limon’s roommate and a former USF student—was taken into custody following a dramatic SWAT standoff at a residence in North Tampa. The developments have sent shockwaves through the university community and the tight-knit circle of international scholars from Bangladesh to which both victims belonged.
The Discovery and the Arrest
The investigation reached a fever pitch early Friday morning. Detectives, who had been following leads across both Hillsborough and Pinellas counties, converged on the Howard Frankland Bridge after receiving information regarding the location of human remains. At approximately 10:30 a.m., Chief Deputy Joseph Maurer confirmed that the body found was that of Zamil Limon.
Simultaneously, units from the Hillsborough County Sheriff’s Office (HCSO) were dispatched to a home in the 14000 block of Pine Glen Circle in the Lake Forest community, just north of the USF campus. The response was initially triggered by an unrelated report of domestic violence involving Abugharbieh. However, upon arrival, deputies realized the occupant was the primary person of interest in the disappearance of the two doctoral students.
Abugharbieh reportedly refused to cooperate with law enforcement and barricaded himself inside the home. The situation escalated quickly, prompting the activation of the HCSO SWAT team, the Bomb Disposal Team, the Crisis Negotiations Team, and the Drone Response Team. For several hours, the quiet neighborhood was transformed into a tactical zone, with residents urged to shelter in place.
The standoff ended when Abugharbieh emerged from the residence with his hands raised, reportedly clad only in a blue towel. He was taken into custody without further violence. According to jail records, Abugharbieh faces a litany of charges, including:
- Unlawfully holding or moving a dead human body in unapproved conditions
- Failure to report a death to the Medical Examiner or Law Enforcement with intent to conceal
- Tampering with physical evidence
- False imprisonment
- Battery
A Timeline of Disappearance
The case began on April 16, 2026, when Zamil Limon and Nahida Bristy were last seen in the Tampa area. Limon, a geography and environmental science PhD candidate, was last spotted around 9:00 a.m. at his residence on Avalon Heights Boulevard. Bristy, a chemical engineering doctoral student, was seen an hour later at the Natural and Environmental Sciences (NES) Building on the USF campus.
When both students failed to respond to messages and missed critical academic commitments, a family friend contacted authorities on April 17. The USF Police Department initially handled the reports, but the case was later transferred to the Hillsborough County Sheriff’s Office as the investigation expanded beyond campus boundaries.
For days, the status of the pair remained “Missing,” but on Thursday, April 23, the HCSO officially upgraded the case to “Missing and Endangered,” citing newly discovered information that suggested the two were in imminent peril.
The Victims: Scholars with Bright Futures
Zamil Limon was described by his brother, Zubaer Ahmed, as a “very responsible and punctual person.” Having lived in Florida for 2 years, Limon was on the verge of a major academic milestone, scheduled to present his doctoral thesis this week. His research focused on the intersection of Artificial Intelligence and environmental science—a field he hoped would enable him to make a significant contribution to global sustainability efforts.
Nahida Bristy, an equally dedicated scholar in chemical engineering, was known for her consistent communication with her family in Bangladesh. Her brother, Zahid Pranto, noted that there had “not been a single day without contact” until April 16. The two students were more than just colleagues; they were a couple who were reportedly considering marriage and a future together.
The loss of Limon and the uncertainty surrounding Bristy have devastated their families abroad, who have been monitoring the case from thousands of miles away. “We are in deep pain,” Ahmed told reporters earlier this week, describing the situation as “unpredictable and unusual.”
The Suspect’s Background
As the investigation continues, attention has turned to Hisham Saleh Abugharbieh. A U.S.-born citizen, Abugharbieh had attended USF from Spring 2021 through Spring 2023, where he pursued a degree in Management, though he was not currently enrolled.
Court records reveal a troubling history of legal issues. In 2023, Abugharbieh faced misdemeanor charges for battery and burglary of an unoccupied dwelling. He had recently completed a diversion program for first-time offenders in 2024. Furthermore, records show that a relative had filed two domestic violence petitions against him in 2023, one of which resulted in a court-ordered injunction.
While the specific motive for the current incident remains under investigation, the charges suggest a harrowing sequence of events leading to Limon’s death and the potential concealment of the crime.
The Ongoing Search for Nahida Bristy
While one part of the mystery has been solved with the discovery of Limon’s remains, the fate of Nahida Bristy remains the primary focus for law enforcement. Dive teams from the Hillsborough County Sheriff’s Office spent much of Friday afternoon searching the waters of Tampa Bay near the Howard Frankland Bridge.
“We are still actively searching for Nahida,” Chief Deputy Maurer stated during a Friday afternoon press briefing. “We are using every tool available—drones, sonar, and specialized dive units—to bring her home to her family.”
The Sheriff’s Office has appealed to the public for any information, no matter how small, regarding her whereabouts or any suspicious activity observed near the Howard Frankland Bridge or the Avalon Heights area between April 16 and April 24.
A Community in Mourning
USF President Moez Limayem issued a heartfelt message to the university community Friday evening, expressing “deep sadness” over the news.
“This is an isolated situation that occurred off campus, and investigators believe the suspect acted alone,” Limayem stated. “There is no ongoing threat to the safety of the university community, but the emotional impact of this loss is immeasurable.”
The university has made counseling services available to students, faculty, and staff, emphasizing the importance of mental health support during such a traumatic time. The Bangladeshi Student Association at USF also held a private vigil Friday evening to honor Limon and pray for Bristy’s safe return.
As the Sun sets over Tampa Bay, the investigation remains fluid. The Pinellas County Medical Examiner’s Office is expected to release the official cause and manner of death for Zamil Limon following an autopsy on Saturday. For now, the community waits, hoping for a miracle in the search for Nahida Bristy while grappling with the stark reality of a brilliant young life cut short.
Sources Used and Links:
- Hillsborough County Sheriff’s Office (HCSO): Suspect Arrested, Remains of One Missing USF Student Located
- The Associated Press: Police identify the body of 1 missing USF student, second still missing as roommate is charged
- The Guardian: Roommate arrested after body of University of South Florida doctoral student discovered
- University of South Florida (USF) News: A message from President Moez Limayem about an ongoing law enforcement investigation
- Hindustan Times: Who is Hisham Saleh Abugharbieh? USF student’s roommate arrested on domestic violence charges amid missing case
- CBS News: Roommate arrested after 1 missing University of South Florida doctoral student found dead
- Global News: 2 University of South Florida doctoral students missing, police say
- The Durango Herald: Florida authorities looking for 2 USF doctoral students take person into custody
- IONTB: USF Police Seek Public’s Help Locating Two Missing Doctoral Students Last Seen in Tampa
- Sunday Guardian Live: Who was Zamil Ahamed Limon? USF Student Found Dead as Search Continues for Nahida Bristy in Tampa
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