Ukrainian authorities have said the town of Borodyanka will be the worst-hit by the Russian invasion in the Kyiv region.

Prosecutor general Iryna Venediktova said the number of civilian victims was likely to be higher than Bucha, where reports of civilian killings have prompted a global outcry.

Borodyanka lies about 50km north-west of the capital Kyiv and around 23km west of Bucha.

In a national televised address Zelenskiy said he believed at least 300 civilians had been murdered in Bucha alone.

And this is only one town: one of many Ukrainian communities which the Russian forces managed to capture,” he said.

Now, there is information that in Borodyanka and some other liberated Ukrainian towns, the number of casualties of the occupiers may be even much higher.”

The Japanese government flew 20 Ukrainian refugees into Tokyo on Tuesday in a high-profile show of support for Ukraine.

The 20 – aged from 6 and 66 and including 15 women – are not the first Ukrainian refugees to arrive in Japan since Russia invaded – but they are the first to be flown in on a special government plane on a trip arranged by Japan’s foreign minister, according to Reuters.

“The government of Japan is committed to provide the maximum support to these 20 Ukrainians to help them live with a sense of peace in Japan, even though they are far away from their home county,” foreign minister Yoshimasa Hayashi told reporters in Poland shortly before he and the refugees set off for Japan.

Hayashi, who had been assessing the refugee situation in Poland, flew in on a separate flight shortly before the 20 arrived.

National broadcaster NHK showed their arrival in a live broadcast.

The 20 are joining nearly 400 other Ukrainian refugees who have arrived since the Russian invasion.