Administrators placed Powell Middle School on lock-down on Monday, after a student brought a plastic toy gun to school.
Officials shut down the perimeter of the middle school off Emory Road, after a witness called the school, and reported that someone was carrying a hand gun, while walking towards the school.
After Knox County Sheriffs office responded to Powell Middle School, they found the student who matched the witness' description and conducted a search. Deputies said they found a plastic cap pistol on the student.