"There is some progress, but there are no agreements ... we are still facing a case in which the United States is trying to use this channel to influence the situation on the ground for its own benefit," Russian Deputy Foreign Minister Sergey Ryabkov said, Russia Today reported.
Progress during the latest meeting in Switzerland, which is being held behind closed doors, is "moving slowly," the diplomat said, but added that negotiations would continue.
Head of the US State Department's Press Office, Elizabeth Trudeau also said on Sunday that she had "nothing to announce at this time."
Earlier in the day, there were reports that Washington and Moscow allegedly "tabled a proposal to rebels in Aleppo that would offer safe passage from the city for fighters." According to a Reuters report, citing three opposition officials from Aleppo rebel groups, the proposal promised rebel fighters a "secure" and "honorable" withdrawal from the city.
Yet, the Russian deputy foreign minister refuted media reports about the alleged agreement. "No joint proposal on any agreements to be put on the table and to be considered by the opposition exists," Ryabkov said, adding that meanwhile Russian forces in Syria are doing everything possible to allow safe passage to civilians seeking to leave the city.
"What is reported by western agencies is not necessarily true... issues of militants leaving are the subject of separate agreements with the United States," Ryabkov said adding, "this agreement has not yet been reached mainly due to the fact that the US insists on unacceptable parameters in terms of a ceasefire which would, in fact, provide full freedom of movement to those who the Syrian forces are currently fighting."