USF doctoral students vanish as family says disappearance is 'very suspicious' and 'unusual'

In a distressing turn of events, two doctoral students from the University of South Florida have been missing for almost a week. Authorities are now appealing to the public for assistance in locating the couple.

The missing individuals, Zamil Limon and Nahida Bristy, both 27, were last seen on April 16 in different locations in Tampa, Florida. The University of South Florida Police Department (USFPD) shared this information on Tuesday as part of their ongoing investigation.

Zamil Limon, who is pursuing a doctorate in geography and environmental science and policy at USF, was reportedly last seen at his residence around 9 a.m. that day.

Meanwhile, Nahida Bristy, a fellow doctoral student focusing on chemical engineering, was last spotted around 10 a.m. on the USF Tampa campus, specifically at the NES Building.

Nahida Bristy

Concerned about their sudden disappearance and inability to make contact, a family friend reached out to the police on April 17, around 4:50 p.m., escalating the search efforts for both Limon and Bristy.

A family friend notified police on April 17 at approximately 4:50 p.m. after concern grew over being unable to contact both Limon and Bristy.

Both have since been added to the state and national missing persons’ databases, police said.

Zamil Limon

Zamil Limon, a USF doctoral student pursuing a degree in geography and environmental science and policy, was last seen at his home around 9 a.m. on April 16. (University of South Florida Police Department)

Limon’s brother told FOX 13 that the situation is highly unusual, calling the doctoral students “responsible and punctual.”

“He is a very responsible and punctual person, and that’s why the situation is so unpredictable and unusual to us… like, and very suspicious,” Zubaer Ahmed, Limon’s younger brother in Bangladesh, told the outlet.

“We’re in deep pain and [it’s a] devastating situation,” he said.

Ahmed spoke to his brother just last Monday and said that he shared that he would be quite busy working on his thesis. Limon’s research, his brother said, focuses around using generative AI to study Florida’s shrinking wetlands.

Ahmed said Limon and Bristy were discussing potentially getting married in the future but were focused on their education.

“Another important point that is they talked about having a future together, but they are not that serious about it. Both of them are thinking about, whether we can marry together, and they are discussing that,” he said.

Larry McKinnon

University of South Florida Police Department Public Information Officer Larry McKinnon told FOX 13 that foul play is not suspected at this point of the investigation for the missing college students. (FOX 13)

USF Public Information Officer Larry McKinnon told FOX 13 that “no stone would be left unturned” in the search for Limon and Bristy, though authorities currently see no signs of foul play.

“Everybody internally is obviously very concerned, as we are concerned. It’s not typical of their behavior, they’re graduate students,” McKinnon said. “We don’t have information that there is foul play or suspicious nature at this point.”

“When we get to this point where we aren’t having success in locating them, then our next best source is the public. That’s where we are at,” he said. “Everybody’s hoping for a positive outcome on this. And that’s why we’re taking it very seriously and making sure we leave no stones unturned to try to find them.”

Detectives with the USFPD and the Hillsborough County Sheriff’s Office are investigating. Anyone with information is asked to call USFPD at 813-974-2628.

Fox News Digital has reached out to the Hillsborough County Sheriff’s Office and USFP for additional information.

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