Ukraine’s President Volodymyr Zelensky has said peace talks will continue with Russia despite accusing Moscow of war crimes and genocide.
Mr Zelensky was speaking in Bucha, near the capital Kyiv, where bodies of civilians were found strewn on the streets after Russian troops withdrew.
The shocking videos and photos sparked outrage around the world and calls for further sanctions against Russia.
Without evidence, Russia said images of atrocities had been staged by Ukraine.
According to the BBC, Ukraine started a war crimes investigation after it said the bodies of 410 civilians had been found in areas around Kyiv. Some were discovered in mass graves while others had their hands tied and had apparently been shot at close range.
Wearing a bullet-proof vest and surrounded by Ukrainian soldiers, Mr Zelensky said Russian troops had “treated people worse than animals”.
Responding to a question from the BBC on whether it was still possible to talk peace with Russia, Mr Zelensky said: “Yes, because Ukraine must have peace. We are in Europe in the 21st Century. We will continue efforts diplomatically and militarily.”