Clashes erupted between Azerbaijani and Armenian troops, Russian news agencies reported early on Tuesday, in a resumption of decades-old hostilities linked to the disputed territory of Nagorno-Karabakh.
Azerbaijan, which re-established full control over the territory in a six-week conflict in 2020, acknowledged casualties among its forces. Armenia made no mention of losses but said clashes persisted overnight.
The Yerevan government said it would invoke a cooperation agreement with Russia and appeal to a Russia-led security bloc, the Collective Security Treaty Organisation, as well as the United Nations Security Council, Interfax reported.
In addition to Russian President Vladimir Putin, Armenian Prime Minister Nikol Pashinyan has called French President Emmanuel Macron and United States Secretary of State Antony Blinken to discuss the situation.
Blinken urged an immediate end to hostilities for which each side has blamed the other.
โSeveral positions, shelters and reinforced points of the Azerbaijan armed forces โฆ came under intense shelling from weapons of various calibres, including mortars, by units of the Armenian army,โ the agencies quoted a statement by Azerbaijanโs Defence Ministry as saying.
โAs a result, there are losses in personnel and damage to military infrastructure.โ
Azerbaijani statements said Armenian forces had been engaged in intelligence activity on its border, moved weapons into the area and on Monday night had conducted mining operations.
It said its actions were โstrictly local in nature aimed at military targets.โ
Armeniaโs Defence Ministry said: โIntensive shooting is continuing โ started as a result of a large-scale provocation by the Azerbaijani side. Armeniaโs armed forces have launched a proportionate response.โ
Conflict first broke out in the late 1980s when both sides were under Soviet rule and Armenian forces captured swathes of territory near Nagorno-Karabkah โ long recognised internationally as Azerbaijanโs territory, but with a large Armenian population.
Azerbaijan regained those territories in the 2020 fighting, which ended with a Russian-brokered truce and thousands of residents returning to homes from which they had fled.
The leaders of both countries have since met several times to hammer out a treaty intended to establish a lasting peace.
Meanwhile Turkish Foreign Minister Mevlut Cavusoglu said on Tuesday he had discussed with his Azeri counterpart โArmenian provocationsโ on the border with Azerbaijan and called on Armenia to focus on peace negotiations.
โArmenia should cease its provocations and focus on peace negotiations and cooperation with Azerbaijan,โ Cavusoglu said on Twitter after talks with Azerbaijan Foreign Minister Jeyhun Bayramov.