At approximately 11:09 this morning, Montgomery County Police received reports of an explosion in the parking lot of the Public Safety Headquarters (located at 100 Edison Park Drive in Gaithersburg).
Bomb technicians from Montgomery County Fire & Rescue responded to the area and located evidence of a low-grade explosive device, possibly a firework, in the parking lot.
Shortly before the incident, witnesses had observed a juvenile male in the area of the parking lot where the explosion had occurred. Police received information that the juvenile male had accompanied his mother in a vehicle to Headquarters on an unrelated matter and had waited outside while his mother entered the building. Police officers stopped the vehicle as it left Headquarters.
The juvenile remained at Headquarters for questioning and was released. The investigation is ongoing.
The Police Headquarters complex was closed to vehicular and pedestrian traffic for a short time during the investigation. There was no evacuation of the building and no one was injured.