The Russia-backed militants conducted 85 attacks on Ukrainian army positions in the past day, the counterterrorism operation press centre reported on Thursday. The separatists keep using heavy artillery that's was to be withdrawn to safe distances from the contact line understand the truce agreement. They keep using mortars, various types of grenade launchers, large-calibre machineguns and small arms throughout the contact line; they also used tanks in attacks on Avdiyivka, and an infantry combat vehicle was engaged in Luhanske, near separatist-held Donetsk. In the vicinity of strategic government-controlled seaport Mariupol in southeastern Ukraine, the terrorists fired over 100 shots from 122mm self-propelled weapons in Shyrokyne. More attacks including with used of artillery, were also reported in the Luhansk sector.