FULTON COUNTY, GA — An investigation is underway after several students and a staff member were assaulted on the playground at Heards Ferry Elementary School in Fulton County.

Fulton County Schools say the middle school–aged suspect is a former student at Heards Ferry Elementary School along Powers Ferry Road. Police say the individual found a way onto the playground and assaulted several students and a staff member.

School officials say some students sustained minor injuries from the incident. Those injuries were medically evaluated.

Fulton County Schools police officers quickly detained the individual and contacted a parent about what happened. The suspect’s identity has not been released.

In a letter to parents, Principal Karen Cooke says counselors are available for anyone involved in the incident. She says all fourth-grade classes were able to meet with administration and counseling staff if needed following the incident.

The investigation into the assault remains ongoing.

WSB Radio’s Mary Ryan Howarth contributed to this story.