Earlier in the day, Lavrov and Kerry met on the sidelines of the Munich Security Conference. Following the talks, Kerry told reporters that the meeting went "excellent."
"[The meeting] was completely devoted to the Syrian settlement in the context of the declaration recently adopted by the International Syria Support Group in Munich. It was about concrete ways of implementing all provisions of the communique," Zakharova said.
She added that the meeting was held at the initiative of the US side.
The ISSG was formed in November shortly after the beginning of the Syria peace talks in Vienna as an international format aiming to resolve the internal crisis in Syria, where a civil war has been ongoing since 2011, with forces loyal to Syrian President Bashar Assad fighting against several opposition factions and extremists.
The format currently involves Russia, the Arab League countries, the European Union and some of its member states, as well as China, Iran, Turkey, the United Nations and the United States.