According to Ukrainian army operation press centre, there were 13 violations in the past day. More than half attacks were launched at night, the report said. The separatists used small arms and grenade launchers to shell Ukrainian strongholds near Avdiyivka not far from militant-held Donetsk. There were also several attacks on villages near government-controlled seaport Mariupol, close to the border with Russia. The Ukrainian army sustained no losses over the past 24 hours, but two soldiers were injured in hostilities, Presidential Administration military spokesman Oleksandr Motuzianyk said at a press briefing on Thursday.