Four civilians were killed and nine wounded by shrapnel during fighting on Saturday and Sunday in eastern Ukraine’s separatist stronghold city of Donetsk, local officials said.Pro-Russian rebels and government forces have continued to clash on the city’s outskirts despite a 5 Sept cease-fire accord that has generally contained violence in other parts of the country’s contested east.Speaking at a daily security briefing in Kyiv on Sunday, military spokesman Andriy Lysenko said 13 Ukrainian servicemen had been wounded in the past 24 hours in fighting in the east.There was no immediate word on casualties among rebel fighters.The sounds of mortar fire and rocket launchers thundered through central Donetsk throughout Saturday night as fighting went on several kilometers away.