Dozens of civilians have been killed and hundreds more injured during heavy Russian shelling of the eastern Ukrainian city of Kharkiv, Ukrainian officials say.

Anton Herashchenko, an adviser to Kyiv’s interior minister, wrote on Facebook that Moscow’s troops had bombarded residential areas with Grad missiles, saying: “Dozens have been killed and hundreds wounded!

“The whole world must see this horror! Death to the occupiers!”

It is not possible at this stage to say exactly how many civilians have been killed so far. The UN Human Rights chief Michelle Bachelet said earlier today that at least 102 civilians had been killed, with a further 304 people injured.

“Most of these civilians were killed by explosive weapons with a wide impact area, including shelling from heavy artillery and multi-launch rocket systems, and air strikes. The real figures are, I fear, considerably higher,” Bachlet said.