A Cobb County middle school student made what its principal described as a “terrible choice” and attacked a classmate Tuesday, causing injuries to both students.

The altercation took place during lunchtime at Daniell Middle School, said Principal Amy Stump in a message to parents and students.

Students and staff are safe, Cobb officials said.

“This situation is being handled according to state law and district policies, including discipline and criminal charges,” Stump said. “Our highest priority is the safety and well-being of our students and staff, and incidents like this remind us that we must be constantly vigilant.”