Their attacks included the use of heavy arms banned under ceasefire agreements. They shelled the Ukrainian forces with artillery, tanks, antiaircraft mounts, mortars, grenade launchers, infantry fighting vehicles, heavy machine guns, and small arms. Avdiyivka and Donetsk remain hotspots of the separatists’ attacks. More shelling was reported near the strategic government-controlled seaport Mariupol near the border with Russia, and around the militant-controlled Luhansk. Four Ukrainian soldiers were wounded in the hostilities in the past 24 hours, military spokesman Oleksandr Motuzianyk told a press briefing on Thursday.