<sod >Explosions were heard and clouds of smoke were seen late on Saturday night near Mariupol, a port city an hour outside of Donetsk, with a volunteer battalion of Ukrainian fighters claiming to have been hit by Grad rockets.< eod>< sod > Explosions were heard and clouds of smoke were seen late on Saturday night near Mariupol, a port city an hour outside of Donetsk, and Mariupol City Council has announced that a civilian has been killed - the first casualty since Friday's ceasefire.< eod>