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ORLANDO, Florida (CNN) -- A 15-year-old high school student died Thursday about two hours after being stabbed at a bus stop on school property, police said.
Michael Nieves died shortly after 4 p.m. at Florida Hospital East with at least one stab wound to the chest, said Carlos Padilla, a spokesman for the Orange County Sheriff's Office.
Kelvin De La Cruz, 17, was booked into jail on first-degree murder charges as an adult, said sheriff's spokesman Jim Solomons.
After the stabbing, the suspect "ran under the bus and tried to change his clothes," but was quickly apprehended, Orange County Sheriff Kevin Beary told reporters.
Investigators recovered a knife, Padilla said.
"Pocket knives do not belong on school campus," Beary said. "It's hard to prevent, but you do the best you can."
The school has no metal detectors, said Ron Blocker, superintendent of Orange County Schools.
"Apparently, the two students during lunch got into a verbal altercation and a fight," he said. "They were arguing, and when they got out about 2:14 in the afternoon the fight continued on to the bus stop. And there they became involved in a physical fight, and one produced a knife and stabbed the other one in the chest."
The stabbing occurred as University High School in east Orlando, Florida, was letting out for the day, Blocker said.
Solomons said police were investigating whether the incident was gang-related but that it did not appear to be.
"It appears to be a grudge ... over a female," he said.
Afterward, outside the school, a group of students held hands and prayed.
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