Ukraine crisis: Shell kills four at Donetsk school A shell has killed four people at a school in the rebel-held east Ukrainian city of Donetsk, on the first day of classes. Officials say no children were apparently hurt when the shell hit a playground but a teacher and a parent are among the dead. Pupils returned to school today after the start of the school year was postponed by a month due to fighting. There has been fighting between rebels and troops at the city's airport this week. BBC