"The representatives of the OSCE Minsk Group from Russia, US and France are involved exclusively with the settlement of the Nagorno-Karabakh conflict," Russian Foreign Ministry Spokeswoman Maria Zakharova said on Wednesday during a media briefing. 

"This refers to the terms of the OSCE mandate. In their statement from April 13 the co-chairmen stressed that special attention should be paid to the achievement of a final comprehensive and sustainable settlement. In this respect, they called on Armenia and Azerbaijan to resume high-level political dialogue under the auspices of the Co-Chairs at the earliest opportunity," stressed the Russian official. 

Speaking of the prisoners of war, Zakharova noted additional efforts are required to resolve the issue.