Murder Suspect Allegedly Asked ChatGPT How to Dump Bodies in Zamil Limon, Nahida Bristy Case

Investigators found evidence of blood inside the apartment Hisham Abugharbieh shared with Zamil Limon and suspicious items belonging to the missing students Nahida Bristy and Limon inside a trash compactor, according to court records.

AFlorida man accused of killing his roommate and friend allegedly used ChatGPT to ask about putting a body in a dumpster days before the two disappeared.

Hisham Abugharbieh is now facing multiple charges—including two counts of first degree murder with a weapon—in connection to the deaths of missing doctoral students Zamil Limon and Nahida Bristy, both 27, according to a statement from the Hillsborough County Sheriff’s Office.

What Happened to Zamil Limon and Nahida Bristy?

Authorities launched a massive search effort to find Limon and Bristy after the pair disappeared April 16. More than a week later, Abugharbieh was determined to be a “person of interest” in the disappearances and taken into custody peacefully April 24 following a standoff with law enforcement at a Hillsborough County home, the sheriff’s office said.

That same day, Limon’s nude body was discovered along the Howard Frankland Bridge, according to court records obtained by the Tampa Bay Times. He had been stabbed multiple times, the outlet reported.

The Hillsborough County Sheriff’s Office discovered a second set of human remains in the waterways in the area of Interstate 275 and 4th Street North on April 26, according to a statement released by the department, but it’s unclear whether that discovery is connected to the case.

Hillsborough County Sheriff’s Office Public Relations Coordinator Brittany Muller told Oxygen.com the morning of April 27 that the remains had still not been identified, adding, “to protect the integrity of the investigation, we will not comment further than what has been released.”

Zamil Limon and Nahida S. Bristy

Photo: University of South Florida Police Department

ChatGPT Searches Discovered on Hisham Abugharbieh’s Phone

Investigators are now releasing more information about what led them to arrest Abugharbieh.

According to the court records obtained by Tampa Bay Times, three days before Limon and Bristy disappeared, Abugharbieh allegedly used Chat GPT to ask about placing a human into a dumpster. When the AI tool replied that “it sounds dangerous,” Abugharbieh asked, “How would they find out?”

Then, just a day before the doctoral students vanished, Abugharbieh asked, “Can a VIN number on a car be changed?” and “Can you keep a gun at home without a license,” per the records.

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Authorities noted other suspicious searches were conducted through ChatGPT in the days after the students disappeared. According to the court records, Abugharbieh asked April 19, “Has there been someone who survived a sniper bullet to the head?” as well as “Will my neighbors hear my gun?”

Blood, Duct Tape, Missing Phone Case Discovered in Missing Person Probe

Investigators also found evidence to suggest that Abugharbieh drove across the Courtney Campbell Causeway to Sand Key Park the night of April 16 with video footage showing a Hyundai matching his vehicle in the area. Limon’s cell phone also last pinged in the same area that night before the signal dropped.

Abugharbieh—who had a cut on his left pinky finger when he talked to detectives—insisted the two had not been in his car and told investigators that he had nothing to do with their disappearances, according to the court documents. He told authorities that he had been in the area that night to check out possible fishing locations. Later, he allegedly admitted to driving Limon to the location, per the court records, but told authorities he’d just dropped his roommate off and then left.

Hisham Abugharbieh

Photo: Hillsborough County Sheriff’s Office

Not far from the apartment Limon and Abugharbieh shared investigators discovered a CVS receipt in a dumpster, with a time stamp of 10:47 p.m. on April 16, for trash bags, Lysol wipes, Febreze, Funyons and Irish Springs body wash. Although Abugharbieh denied making the purchase, investigators found a DoorDash order on his phone for the items, per the court records.

Investigators also uncovered silver duct tape, which tested positive for blood.

Inside Limon’s bedroom in the apartment, they found Bristy’s purse and USF identification card, sneakers and an umbrella she was seen carrying in surveillance footage showing her leaving the campus that day, according to The Tampa Bay Times.

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Limon’s wallet, glasses and Bristy’s iPhone case were all discovered inside a trash compactor, authorities said in the documents. In addition, investigators found blood-stained clothing and a kitchen floor mat that had been missing from the apartment.

Inside Abugharbieh’s bedroom, forensic analysis revealed two “relatively human-sized” spots on the carpet that tested positive for blood through chemical testing, according to the court records. Authorities also discovered trash bags and duct tape under Abugharbieh’s bed.

Abugharbieh is currently being held without bond, according to Fox 13.  His pre-trial hearing is scheduled for April 28. It’s unclear whether he has retained an attorney.

 BREAKING NEWS: After a body wearing clothing matching Nahida Bristy was found, investigators say one detail changed everything — a relative revealed she always wore a specific ring on her right hand, but the affidavit noted that the ring was not found at the scene

The investigation into the deaths of University of South Florida doctoral students Zamil Limon and Nahida Bristy has encountered a pivotal forensic discrepancy following the discovery of a body matching Nahida’s description. While initial identification relied on clothing and physical characteristics, a new revelation from a family member has shifted the focus toward a potential missing trophy or a secondary crime scene. According to the relative, Nahida was known to never be without a specific ring worn on her right hand, an item of deep personal or familial significance. However, the official investigative affidavit noted a glaring absence: the ring was not recovered from the scene where the body was found. This missing piece of jewelry has become a central focus for detectives, as it suggests the perpetrator may have removed it during or after the struggle, potentially as a keepsake or to dispose of evidence that could link the victims more closely to a specific location.

The absence of the ring has sparked several harrowing hypothetical scenarios regarding the final interaction between the victims and the suspect, Hisham Saleh Abugharbieh. One prevailing theory is that the ring was forcibly removed during the abduction or the struggle, which would align with the five-inch movement marks previously documented by forensic teams. If the ring was taken as a trophy, it represents a chilling psychological aspect of the crime, suggesting a level of predatory intent that goes beyond a simple domestic or academic dispute. Investigators are now scouring pawn shop records and conducting detailed searches of Abugharbieh’s residence and vehicle, operating under the hypothesis that the ring was retained by the suspect and could serve as the “smoking gun” that physically places him at the site of the murders.

Another darker possibility being explored is that the ring was lost at a secondary location that investigators have yet to identify. If Nahida was intercepted in one area and transported to the Howard Frankland Bridge or another site, the ring may have slipped off or been discarded during the transit. This would mean that the current crime scene is only one part of a larger, more complex sequence of events. The missing jewelry has forced a re-examination of the 12-minute window following Zamil’s last appearance, with detectives looking for any signs of a struggle in the residential areas or campus paths the couple frequented. The ring, once a symbol of Nahida’s personal identity, has been transformed into a silent piece of evidence that could define the legal outcome of the case.

The emotional weight of this discovery is profound for the families involved, who are already grappling with the loss of two brilliant scholars. For them, the missing ring is not just a piece of evidence but a stolen part of Nahida’s memory. The USF community remains in a state of high alert and mourning as the forensic details continue to emerge, painting a picture of a tragedy that was both calculated and cruel. As the search for the ring continues, it serves as a haunting reminder of the small, personal details that can change the entire direction of a murder investigation. The efforts to locate this item represent the community’s broader struggle to find closure and justice for Zamil and Nahida, whose promising lives were cut short in the spring of 2026.