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(CNN) -- Sorrow and disbelief replaced the chaos of Monday morning's school shooting in Chardon, Ohio, as residents and investigators tried to sort out what prompted a young man to open fire on a table of students in the school cafeteria, killing one and wounding four others.
"I just can't believe it. I don't think it's real," said student Danny Komertz, who witnessed the shooting. "And I just, it kills me that I saw someone hiding, and now that someone is now dead."
The gunman, whom police said was a juvenile, opened fire in the cafeteria of Chardon High School just as the school day was getting started about 7:30 a.m., according to police. Witnesses said he walked up to a table of four students he may have been friendly with and began shooting.
Police arrested the suspect a short time later in Chardon Township, police said.
Police Chief Tim McKenna declined to identify the suspect. But the the Plain Dealer newspaper in Cleveland cited student Nate Mueller, who was slightly wounded in the shooting, in identifying the suspect as student T.J. Lane.
The fatally wounded student was identified by the hospital that treated him as Daniel Parmertor.