The two sides pounded each other with rockets and artillery in the fiercest round of the decades-old conflict in more than a quarter of a century.
World leaders urged the battle to cease after the worst expansion since 2016 sparked the ghost of another war between former Soviet rivals Armenia and Azerbaijan.
While the current round of clashes is largely confined to Nagorno-Karabakh, which is run by ethnic Armenians and not recognized by any country as an independent republic, there has been widespread fear that it could evolve into a full-blown war involving heavy intervention by Turkey and Russian Federation. We'll see if we can stop it'.
Karabakh s defence ministry said 26 more of its troops were killed late on Monday, bringing the rebels total military losses to 84.
In July, clashes broke out along the border in Azerbaijan's autonomous Nakchivan exclave, which is nestled between Turkey, Iran and Armenia.
Vartanyan said the use of rockets and artillery would increase the risk of civilian casualties, making it hard to halt the expansion by diplomatic means.
He stressed that "the Russian side is in constant contact with Yerevan, Baku and Ankara at various levels".
Azerbaijan's defence ministry said both sides had attempted to recover lost ground by mounting counter-attacks in the directions of Fizuli, Jabrayil, Agdere - Armenian-occupied areas of Azerbaijan that border Nagorno-Karabakh.
Although a ceasefire was reached in 1994, after thousands of people were killed and many more displaced, Azerbaijan and Armenia frequently accuse each other of attacks around Nagorno-Karabakh and along the separate Azeri-Armenian frontier. Hundreds of small-scale clashes in areas around the enclave have been reported throughout the years leading up to today.
French President Emmanuel Macron expressed his "deep concern" on Sunday and "strongly called for an immediate end to hostilities".
The European Union warned regional powers on Monday (28 September) to stay away from renewed fighting in Nagorno-Karabakh and condemned what it said was a "serious escalation" that may have "serious consequences for regional stability". All shops were closed and hardly anyone was in the streets.
"Turkey stands by its Azeri brothers with all its means", Turkish President Recep Tayyip Erdogan said on Twitter after he spoke with Aliyev.
British Prime Minister Boris Johnson discussed the surge in violence with Erdogan in a call on Monday. Turkey has issued a statement saying that we understand that this crisis will be resolved peacefully but till now the Armenian side does not seem inclined for it. Turkey said that we will continue to stand with the people of Azerbaijan against the aggressive action of Armenia or any other country.
The Armenian Defense Ministry said on Sunday that it had shot down two of Azerbaijan's helicopters and three of its drones in Nagorno-Karabakh.
In past years, Turkey sought to exert influence overseas with incursions into neighboring Syria and Iraq, and military support for the internationally recognized government in Libya.
A spokesman for the UN Secretary General, Stephane Dujarric, stated that the organization can not independently verify the truth of this claim that Turkey is interfering in the conflict around Nagorno-Karabakh, and called for approval of access to the OSCE monitoring mission to the conflict zone.
Evyazov also said Lernik Vardanyan, commander of the Armenian airborne assault battalion, had been killed near Talish.