ROUGH CUT (NO REPORTER NARRATION)<br/> <br />STORY: Prolonged shelling was heard in an area north of Donetsk, with plumes of black smoke filling the sky on Sunday morning (September 7), in a further test for a ceasefire that is barely 40 hours old.<br/> <br />The shelling came from near the airport, which has been in the hands of Ukrainian government forces though pro-Russian rebels control the city. Rebels told Reuters the airport itself was now empty and that the fighting was centred on a nearby military compound.<br/> <br />Overnight the port of Mariupol on the Sea of Azov, to the south of Donetsk, also saw a serious violation of the ceasefire when government forces came under artillery fire.<br/> <br />The ceasefire, brokered by envoys from Ukraine, the separatist leadership, Russia and Europe's OSCE security watchdog on Friday (September 5) in Minsk, is part of a peace plan intended to end a five-month conflict that has killed nearly 3,000 people.<br/> <br />The renewed shelling broke out hours after Russ
