A Florida sheriff says a body found in Tampa Bay has been identified as the second missing University of South Florida doctoral student from Bangladesh. Nahida Bristy’s remains were in a garbage bag, discovered by a kayaker whose fishing line got snagged. Hillsborough County Sheriff Chad Chronister said the positive identification was eventually made using DNA and dental records. The body of her friend, fellow USF doctoral student Zamil Limon, was found in another garbage bag on a bridge over the bay. Limon’s roommate, Hisham Saleh Abugharbieh, is jailed on two charges of murder. The sheriff said detectives are still working to determine a motive for what he's calling “a monstrous crime.”