Russia's Defense Ministry is particularly concerned about reports of terrorist groups moving from the Middle East to the Nagorno-Karabakh conflict zone, the Ministry said, TASS reported.

The Ministry added that this concern was conveyed by Russian Defense Minister Sergey Shoygu during a telephone conversation Monday with his Turkish counterpart, Hulusi Akar.

To note, on October 7, the Russian Defense Minister had held telephone talks with his Armenian and Azerbaijani counterparts, Davit Tonoyan and Zakir Hasanov. The parties had discussed the situation in the Nagorno-Karabakh conflict zone.