Florida authorities are searching for two missing doctoral students who mysteriously vanished nearly a week ago.
The University of South Florida Police Department is now asking for the public’s help to find Zamil Limon and Nahida S. Bristy, both 27, who were last spotted, separately, on April 16.
“Everybody internally is obviously very concerned, as we are concerned,” USF Public Safety Public Information Officer Larry McKinnon told Fox 13. “It’s not typical of their behavior, they’re graduate students.”
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What Happened to Zamil Limon and Nahida S. Bristy?
Limon—who is pursing a doctoral degree in geography, environmental science and policy—was last seen at around 9 a.m. on April 16 at his Tampa home, according to the statement from police.
Meanwhile, Bristy was spotted an hour later at a building on the USF Tampa campus. The doctoral student is studying chemical engineering at the college.
Police say neither has been seen again. A family friend reported the pair—who are both from Bangladesh—missing to the campus police around 4:50 p.m. April 17 after they were unable to reach either of them.

Zamil Limon And Nahida S. Bristy
A police spokesman told Fox 13 the two are friends and authorities believe they are together.
Oxygen.com reached out to police for additional information, but did not receive an immediate response.
McKinnon told the news outlet that there are no signs of foul play or anything “suspicious in nature” at this point in the investigation.
“When we get to this point where we aren’t having success in locating them, then our next best source is the public,” he explained. “That’s where we are at.”
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Speaking from Bangladesh, Limon’s brother Zubaer Ahmed told Fox 13 that the family is in “deep pain” from what he described as a “devastating situation.”
“He is a very responsible and punctual person, and that’s why the situation is so unpredictable and unusual to us,” he said, adding he found the disappearance “very suspicious.”
According to Ahmed, Limon and Bristy had been casually discussing plans to marry before they disappeared, but each had been more focused on their studies.
“They talked about having a future together,” he said, “but they are not that serious about it.”
Authorities are asking that anyone with information on the case, contact the University of South Florida Police Department at (813)-974-2628.