"The situation in the Nagorno-Karabakh region inspires extreme concern ... Estonia, as a member of the UN Security Council, initiates consultations to discuss the events in Nagorno-Karabakh in the UN Security Council," the newspaper Postimees quoted him as saying.

Reinsalu called on the parties to immediately end hostilities and begin a peaceful settlement of the situation.

Earlier, the EU High Representative for Foreign Affairs and Security Policy Josep Borrell called on the forces of Armenia and Azerbaijan to stop armed clashes in the Nagorno-Karabakh region.

During a telephone conversation, Russian President Vladimir Putin and Armenian Prime Minister Nikol Pashinyan also discussed a sharp exacerbation of the situation in the zone of the Nagorno-Karabakh conflict.

On September 27, Azerbaijani President Ilham Aliyev signed a decree on the introduction of martial law.

The same decision was made by the Armenian government.