A declaration on the Nagorno Karabakh conflict was not adopted in Helsinki because of Russia's groundless demands, according to the U.S. Co-chair of OSCE Minsk Group.

"Some proposals [I can't give any details] were put forth at the meeting between Armenian, Azerbaijani Foreign Ministers and the Co-chairs' in the framework of OSCE Ministerial Council," Matthew Bryza said.

He said that the exact date of Azerbaijani and Armenian Presidents' meeting is not known but voiced hope it will take place within several weeks.

Ambassador Bryza also informed that the Co-chairs are not planning a regional visit till the end of the year, the Azeri Press Agency reports.