Fighting in eastern Ukraine has claimed more lives overnight, as calls for a ceasefire to be extended past 10pm local time Friday remain unanswered.<br /><br />Four members of the Ukrainian forces were killed and five wounded when a military post was stormed by rebels near Kramatorsk.<br /><br />Attacks have marred the week-long ceasefire across the whole of eastern Ukraine, centering on the flashpoint towns of Luhansk and Donetsk.<br /><br />Early Friday morning rebels released four out of eight international observers kidnapped last month.<br /><br />The remaining four are being held in Luhansk.<br /><br />The gesture is being greeted as a sign of willingness to end the conflict which has led to the deaths of more than 400 people.
