UPDATE: Bullets found on school grounds reportedly caused Heritage High School to go into a brief lockdown Thursday afternoon.

A student was found to have 10 bullets in his posession, said Rockdale County Public Schools spokesperson Cindy Ball.

"There was never any threat or weapon associated with this matter," she emphasized.

Gunshots were not heard in the area, said Sergeant Andrew Arnold, spokesperson for the Rockdale County Sheriff's Office.

A newly acquired K-9 trained in detecting explosive odors was sent to the school as a precaution to locate a 9-millimeter handgun around 1:30 p.m. The search yielded no results.

------------------------------------------------------

IN BRIEF: Heritage High School was put under a short, "preventative" lockdown Thursday afternoon. The lockdown was lifted after less than 10 minutes. Check back later for more details.