Dozens dead in Ukraine prison blast as both sides trade blame

Ukraine says Russia trying to hide fact that Ukrainian prisoners of war were tortured and murdered'

• Russia-Ukraine war: latest updates

Dozens of Ukrainian prisoners of war have been killed in an attack on a prison building in Russian-occupied Donetsk that both sides in the war have blamed on each other.

Russia's defence ministry said 40 prisoners were killed and 75 wounded in the attack on the prison in the frontline town of Olenivka. A spokesman for local, Russian-backed self-styled separatist forces put the death toll at 53. Both accused Ukrainian forces of striking the prison with US-made Himars rockets.