At least 56 people were killed and 596 injured in the clashes in Sudan, the Sudan Doctors Commitee said on social media.
Russia, as well as some other states and organizations, including the UN, AU and EU, called on the conflict sides in Sudan to cease hostilites.
"We call on the parties to the conflict to show political will and restraint and take urgent steps towards a ceasefire," the Russian Foreign Ministry said in a statement.