Russia says its embassy compound in the Syrian capital has come under shelling from rebels.
The Foreign Ministry said on October 4 that the embassy in Damascus was shelled the day before.
No one was harmed in the mortar fire, which the ministry said apparently came from an area controlled by two "terrorist groups" fighting against Syrian President Bashar al-Assad's forces.
Moscow, a key Assad ally, considers the shelling to be "a consequence of actions by those such as the United States and some of its allies who are instigating a continuation of the bloody conflict in Syria by catering to militants and extremists of various sorts," a statement said.
The situation in Syria has deteriorated considerably since the collapse of a U.S.-Russia-brokered cease-fire two weeks ago.