Collective Security Treaty Organization (CSTO) made a statement calling on Armenia and Azerbaijan for immediate ceasefire, Trend reports citing the Russian Mk.ru news website.
The CSTO Secretariat expressed serious concern over the aggravation of the situation between the two countries.
"The current situation does not contribute to the normalization of the situation on the border of two neighboring states," the statement said.
Starting from noon on July 12, units of the armed forces of Armenia, grossly violating the ceasefire in the direction of Azerbaijan’s Tovuz district along the Azerbaijani-Armenian state border, opened artillery fire at Azerbaijani positions.
Azerbaijan's armed response forced the Armenian army to retreat suffering losses.
The tensions in Tovuz district on the Azerbaijan-Armenia state border continued July 12 night. During the night battles, by using artillery, mortars and tanks, the Azerbaijani armed forces destroyed a stronghold, bombshells, vehicles and servicemen on the territory of the Armenia’s military unit.
Servicemen of the Azerbaijan Army, non-commissioned officer, sergeant Vugar Sadigov and senior soldier Elshad Mammadov died in holding off an Armenian attack. Despite the efforts of Azerbaijani doctors, a badly wounded serviceman of the Azerbaijan Army, soldier Khayyam Dashdamirov also died.
On the night of July 12-13, tensions continued on the Azerbaijani-Armenian border in the Tovuz district’s direction.
In the night battles involving artillery, mortars and tanks, Azerbaijani military divisions destroyed the stronghold, artillery installations, automotive equipment and manpower of the Armenian military unit.
During the battles, the senior lieutenant of the Azerbaijani army Rashid Mahmudov was killed.