The child of a South Fulton police officer took a gun to a middle school Wednesday, officials said.

Renaissance Middle School was placed on lockdown after a student reported to an adult that they saw another student with a weapon on campus, Principal Ava Williams wrote in a letter to parents. Fulton County police officers questioned several students and searched the premises for threats until the weapon was confiscated.

No one was injured in the incident.

South Fulton police spokesman Lt. Jubal Rogers said that after an internal review, the department determined that the officer “did not violate any SFPD policies or procedures regarding this incident.” The officer remains on duty.

Rogers said the gun was not a department-issued weapon. Authorities did not elaborate as to how the child was able to gain access to the weapon and take it inside the school.

“This is an extremely serious occurrence, and this behavior will not be tolerated,” Williams said. “Any situation potentially endangering the safety of our school community will be handled quickly and judiciously, including a discipline hearing and possibly criminal charges for the responsible parties.”