Two people were shot, one fatally, after a high school graduation ceremony outside Atlanta on Friday night, according to the Clayton County Police Department and local reports.

The shooting took place near the Clayton County Schools Performing Arts Center, in Jonesboro, Ga., where Perry Career Academy had just had its graduation ceremony.

“An argument broke out, which led to two individuals being shot,” Thomas Y. Trawick Jr., the chief of safety and security at Clayton County Public Schools, told the television station WXIA on Friday. The episode took place after the graduation at the overflow parking lot at Mount Zion High School, which is directly across the street from the performing arts center, he said.

Latrallo Presley, whose cousin was participating in the ceremony, told the station that he heard “multiple” gunshots.