A ceasefire has been achieved on the border of Armenia and Azerbaijan thanks to Russia's efforts, Grigory Karasin, Chair of the Russian Federation Council Committee on Foreign Affairs, told RIA Novosti Tuesday morning.

"In addition, after the conversation between Russian President Vladimir Putin and Armenian Prime Minister Nikol Pashinyan, and the work of the Russian Foreign Ministry. There is a lot of work to be done toward the aggravation of the situation on the border of these two countries, as Yerevan has petitioned to the CSTO," Karasin added. "The escalation [of tension on the border between Armenia and Azerbaijan] took place yesterday evening. That’s why, intensive work was carried out in the evening and at night hours—including at the Russian MFA."

Karasin recalled that there was a telephone conversation between Russian President Vladimir Putin and Armenian Prime Minister Nikol Pashinyan.

"The point was to stop the escalation, to establish a normal atmosphere in the border zone, and as a result, we managed to achieve the fact that a ceasefire was announced at 9am today," Karasin said.

According to him, the situation was managed to be relatively calm and peaceful, "a lot of work is ahead" because Pashinyan has petitioned to the CSTO.

Azerbaijan opened fire early hours on Tuesday near the Armenian borders. The reports have been confirmed by the Armenian defense ministry spokesperson who said that the adversary also used UAVs. The Armenian side has casualties and wounded. The Armenian death toll has reached 49. The defense ministry said it will regularly issue official reports on the situation developments.