Regional head Mykhailo Semikin said at least nine aerial bombs hit Komyshuvakha on Monday, and the aid center collapsed from a direct hit, BBC News reports. He called it one of the deadliest attacks there since the full-scale invasion began, the BBC says.

“They had come for help - not to a military facility, not to a frontline position, but to a place where they were supposed to receive support,” Semikin wrote on Telegram, the BBC reports.

Zelensky said 33 people were killed and more than 50 could be trapped in the rubble, The Guardian reports. He called it one of Moscow's worst attacks of the war, the paper says.

Russian forces struck a former school building that Ukraine said was used to hand out aid, The Guardian reports. Zelensky said there was a second attack on the place where people were sheltering after the first strike, the BBC says.

Officials say rescue teams have at times had to stop searching because of Russian drone attacks in the area, the BBC reports. Two rescuers and four police officers are among the dead, the BBC says.

Russia also bombarded Ukraine's energy grid on Tuesday, knocking out power across much of the country, The Guardian reports. Zelensky said Russia launched 289 drones and dozens of missiles overnight, the paper says.

Earlier, when 29 deaths had been confirmed, Semikin said 10 more people were hurt and 48 were missing, the BBC reports. The private power company DTEK said three of its five thermal power plants were knocked offline, The Guardian says.

What we know: Russian bombs hit an aid center in Komyshuvakha, killing dozens of people.
What we don't: The final death toll. Dozens of people are still missing or trapped.