On 20 June, at 09:54, the National Center for Crisis Management received an alarm that ammunition was found on the Yerevan-Ashtarak highway, near the Vahagn district.

A fire brigade from the fire-rescue detachment of the rescue department of the Yerevan city of the Ministry of Emergency Situations, the operative groups of Civil Defense Department of the Civil Defense Forces Collective Center Civil Engineering and Operative Groups of the National Center for Crisis Management left for the scene.