Russian forces attacked the Ukrainian capital Kyiv overnight, killing 10 people and injuring more than three dozen.
Drones and missiles struck residential buildings and started a fire in a hotel on a central boulevard.
Tymur Tkachenko, head of the capital's military administration, said 10 people had been killed, with about three dozen locations across the city damaged in the attacks. He did not elaborate.
Kyiv Mayor Vitali Klitschko, writing on Telegram, said separately 34 more were injured, adding that among the damages, the first to sixth floors of an apartment building collapsed after a direct hit.
In an earlier post, Klitschko said the injured included paramedics and drivers at an ambulance station, and that some people were still trapped inside damaged residential buildings.
Similarly, Ukrainian forces struck the Lukoil-Nizhegorodnefteorgsintez oil refinery in the town of Kstovo in Russia's Nizhny Novgorod region overnight, the Ukrainian General Staff said.
According to preliminary data, a primary crude oil processing unit was hit, the General Staff said on Telegram.
They said the extent of the damage was being clarified.
Ukraine has recently intensified strikes deeper into the Russian territory, triggering a widespread fuel crisis in the world's third-biggest oil producer and forcing it to import gasoline from as far away as India. (Reuters)
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