Ukrainian government ombudsman Lyudmyla Denysova says more than 210 Ukrainian civilians have been killed and more than 1,100 wounded in Russia's invasion.

"With unseen cruelty, the enemy is destroying residential buildings, hospitals, kindergartens and schools, taking away the right to live from the sons and daughters of Ukrainian land, including children," she said in a social media post.

Denysova gave examples of some of the civilian deaths, including a child killed in the shelling of a hospital in Kyiv, and a woman killed after a missile hit a residential building in Kharkiv.

She called for Russia to be “punished severely for these crimes”.

“Ukraine is noting down all these facts and will pass them on to the military tribunal in The Hague," she said.