Armenian separatists in the Nagorny Karabakh region are resisting an Azerbaijani offensive, officials in Yerevan said, as heavy fighting entered a third day Tuesday ahead of UN Security Council talks on the crisis.

Yerevan and Baku have been locked in a territorial dispute over the ethnic Armenian region of Nagorny Karabakh for decades, with deadly fighting flaring up last July and in 2016.

Armenian Prime Minister Nikol Pashinyan met with top military officials in Yerevan to discuss the crisis
Armenian Prime Minister Nikol Pashinyan met with top military officials in Yerevan to discuss the crisis press service of Armenia's government / Handout

The region declared independence from Azerbaijan after a war in the early 1990s that claimed 30,000 lives.

It is not recognised by any country -- including Armenia -- and is still considered part of Azerbaijan by the international community.

Map of Azerbaijan and Armenia locating Azerbaijan's breakaway region of Nagorny Karabakh.
Map of Azerbaijan and Armenia locating Azerbaijan's breakaway region of Nagorny Karabakh. AFP / STAFF

"Armenian forces repelled Azerbaijani offensives at various sectors of the frontline and the enemy suffered serious losses in manpower," Armenia's defence ministry said.

"The Azerbaijani side launched massive artillery shelling of Armenian positions, preparing for a fresh attack," ministry spokesman Artsrun Hovhannisyan wrote on Facebook.

Azerbaijani and Armenian forces battled for a second day after dozens were killed in an outbreak of heavy fighting that has raised fears of an all-out war between the longtime enemies.
Azerbaijani and Armenian forces battled for a second day after dozens were killed in an outbreak of heavy fighting that has raised fears of an all-out war between the longtime enemies. ARMENIAN MINISTRY OF DEFENCE

The defence ministry in Baku said "fierce fighting continued overnight as Armenia's attempted counter-offensive to win back positions it lost to Azerbaijani forces was repelled."

"An Armenian motorised column and an artillery unit was destroyed," the ministry said.

The reigon declared independence from Azerbaijan after a war in the early 1990s that claimed 30,000 lives
The reigon declared independence from Azerbaijan after a war in the early 1990s that claimed 30,000 lives AFP / Narek Aleksanyan

In the early hours on Tuesday, "Azerbaijani forces continued an offensive on the city of Fizuli, destroying four enemy tanks, an armoured vehicle and killing ten troops."

The UN Security Council was due to meet Tuesday at 5:00 pm (2100 GMT) for emergency talks on Karabakh, behind closed doors, diplomats told AFP.

The overall death toll rose to 95 on Monday, as Karabakh reported 84 military casualties and with 11 civilians killed in clashes: nine in Azerbaijan and two on the Armenian side.

Azerbaijan has not reported military casualties, but Armenian separatist officials have released footage from the battlefield showing what it said was the remains of Azerbaijani soldiers.

Fighting between majority-Muslim Azerbaijan and Christian Armenia could embroil regional players, Russia and Turkey.

Russia, which has a military alliance with Armenia and stations a permanent military base there, sells sophisticated weapons worth billions of dollars to both Baku and Yerevan.

With each side blaming the other for the flare-up that erupted Sunday, world leaders have urged calm as fears rise of a full-scale conflict.

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