One of the drones Azerbaijan used has crashed on Armenian soil.
The Defense Ministry said the Armenian side will have to retaliate against the Azerbaijani forces.
No casualties were reported in Azerbaijan's attack.
Azerbaijan, with help from Turkey and Syrian and Libyan mercenaries deployed by Ankara, started a war against Karabakh (Artsakh) in the morning of September 27. The Armenian side has reported deaths and injuries both among the civilian population and the military. Foreign and local journalists too have been injured in Azeri shelling of towns and villages.