Three civilians and two Ukrainian soldiers were killed in eastern Ukraine within 24 hours up to midday on Thursday, Kiev's military said, further eroding a four-month-old ceasefire in the separatist conflict. The truce brokered by the leaders of Ukraine, Russia, Germany and France has stemmed large-scale fighting but regular skirmishes near Donetsk claim lives almost daily on both sides, and international monitors said they feared a bigger flare-up. The two Ukrainian soldiers were killed and 13 others wounded by pro-Russian separatists using heavy weapons in violation of the February ceasefire, a military spokesman said in Kiev.