"Despite the start of Ramadan, a holy month for all Muslims, on Monday, terrorist groups are attacking not only the positions of the government forces and Kurds in Aleppo but residential areas as well. The number of civilian casualties is growing."
In the night, the terrorists purportedly fired multiple rocket launchers, artillery, mortars and anti-aircraft weapons at Aleppo, the center said.
"Over 24 hours, the settlement of Handrat, the al-Nairab airport as well as al-Muhafaza, Meydan, Sheikh Maqsood and al-Zahra districts in Aleppo were subjected to mass fire from multiple rocket launchers and mortars."
The ceasefire in Syria worked out by Russia and the United States took effect on February 27. The cessation of hostilities does not apply to terrorist organizations, such as Daesh and al-Nusra Front, outlawed in a number of countries worldwide including Russia and the United States.
Syria has been mired in civil war since 2011, with government forces loyal to Syrian President Bashar Assad fighting numerous opposition factions and extremist groups.