A packaging container includes a base section having a U-shaped perimeter wall and a cover section having a cover outer wall, the cover section adapted to cover the base section when in a closed state. The packaging container includes a closure mechanism including an aperture formed within an outer wall segment of the base section and a projection extending inward from the cover outer wall for engaging the outer aperture of the base section. The closure mechanism retains the cover section over the base section and securing the packaging container in a closed position, wherein an obstructive member obstructs movement of the inner wall segment of the base and prevents the projection from being released from the outer aperture. A release tool is provided for being inserted between the cover outer wall and the base outer wall, wherein the release tool is adapted to move the cover outer wall outwardly to release the projection from the outer aperture, thereby opening the packaging container.