"Aircraft of Russia's aviation company Abakan Air has delivered more than 15 tonnes of UN humanitarian cargoes to the city of Deir ez-Zor besieged by the terrorists of the Islamic State [Daesh]," the ministry said in a daily bulletin posted on its website.
According to the bulletin, Russian military has also delivered some 10 tonnes of humanitarian aid, mostly food supplies, to low-income families of Syria's provinces of Hama, Damascus, Latakia and Aleppo.
Syria has been mired in civil war since March 2011, with government forces loyal to Syrian President Bashar Assad fighting numerous opposition factions and extremist groups, such as Daesh, which is outlawed in many countries, including Russia and the United States. Deir ez-Zor has been surrounded by Daesh militants since 2014.