A 32-year-old Duluth man was arrested Tuesday for allegedly making threats against the Art Institute of Atlanta.

“The threat stated, ‘Columbine 2014 will go down today,’” Sgt. Ron Momon with Sandy Springs police said.

Anthony Michael Kallio, former student, emailed the threat, according to police. The Art Institute of Atlanta, located at 6600 Peachtree Dunwoody Road, was evacuated and closed after the threat Tuesday afternoon.

Kallio was charged with terroristic threats and transported to the Alpharetta jail, Momon said. Detectives were executing a search warrant for his residence Tuesday night.

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Flights are shown cancelled on a screen at Hartsfield-Jackson Atlanta International Airport domestic terminal in Atlanta on Friday, Nov. 7, 2025. Cancellations at the Atlanta airport got worse over the weekend, as about 370 flights were canceled Saturday and about another 470 more by Sunday. (Arvin Temkar/AJC)

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Credit: arvin.temkar@ajc.com