A staff member "was able to talk to that person while he was still armed, and at least calm him down long enough for us to take him into custody", Columbus Police Chief Kimberly Jacobs told a news conference.
Columbus City Schools said that classes have been canceled for the day, and that students have been transported to Linmoor Education Center on Hamilton Ave. "They just pat us down everywhere to make sure there's nothing on us".
The suspect was arrested around 9:15.
"Excellent job by our officers!" the tweet stated.