Russia-Ukraine war live: 4,000 civilians in Bakhmut, says Ukraine, as west says Russia has sustained up to 30,000 casualties there

Ukraine deputy PM says around 38 children remain in besieged city as western officials estimate Russia has sustained heavy losses there

Suspilne, Ukraine's state broadcaster, reports on its Telegram channel for Sumy that Bilopillia, a city in the north-east of Ukraine, close to the border with Russia, has been hit by mortar fire this morning. No damage or casualties were reported. The claim has not been independently verified.

Russian forces carried out 50 airstrikes and five missile strikes overnight and Ukrainian forces repelled 37 attacks in the area around Bakhmut, according to the latest update by the General staff of the armed forces of Ukraine.

This is Martin Belam taking over the live blog in London. You can contact me at martin.belam@theguardian.com