(Johnston, Iowa/KCCI-TV) –  The Johnston Middle School was briefly placed on lockdown status on Thursday afternoon after a weapon was reported in a restroom in the building. According to the district, a student reported seeing a weapon in an upstairs restroom around 2:48 p.m., and the school was placed in lockdown. All students and staff were required to stay in their current locations until given the all-clear, which came 20 minutes later when students were dismissed at 3:08 p.m.

The District cancelled all evening activities while an investigation into the incident was being conducted. The Johnston Police Department says that after a “thorough search” of the school building, no weapon was found. A student was taken into custody.