As many as 21 ceasefire violations have been observed in Donbas in the past 24 hours, the press service of the Anti Terrorist Operation (ATO) headquarters has said.In addition to that, the populated localities of Novooleksandrivka, Krymske, Avdiyivka, Balka Kosharna and Shyrokyne were shelled with grenade launchers of various systems, large-caliber machine guns and small arms.