Baku and Yerevan exchanged mutual accusations of an attack on the territory of their countries.

The United States is deeply concerned about reports of intense fighting between Armenia and Azerbaijan, the Department of State said in a statement released Tuesday evening.

We urge both sides to take concrete steps immediately to reduce tensions and prevent further escalation. We also call on the parties to engage directly and constructively to resolve all outstanding issues, including border demarcation,” the statement said.

The Department of State recalled that yesterday the Minsk Group co-Chairs stated that the new increase in tension in relations between Armenia and Azerbaijan underlines “the need for a coordinated, comprehensive and sustainable settlement of all outstanding issues related to the Nagorno-Karabakh conflict or arising as a result of it.”

On Tuesday, Yerevan and Baku exchanged mutual accusations of the attack. The Azerbaijani Defense Ministry announced that two servicemen were wounded during an attack by Armenia. According to the ministry, the Armenian side attacked posts in the Kelbajar and Lachin districts using mortars and artillery.

The Armenian side, on the contrary, blamed Azerbaijan for the attack, claiming that it conducts local battles on the border with the use of artillery, armored vehicles, and other weapons.

On November 16, the Ministry of Defense of Armenia announced an agreement with Azerbaijan on a ceasefire on the border.

“With the mediation of the Russian side, a ceasefire agreement was reached on the eastern section of the Armenian border from 18:30 local time. The situation has relatively stabilized,” the Armenian ministry said in a statement.