Ukrainian President Volodymyr Zelensky said up to 1,000 people were in the mall when it was hit by missiles, adding: “The number of victims is impossible to imagine.”
Later on Monday, the head of the Poltava region military administration, Dmytro Lunin, said 10 people had died in the attack. Another person later died at hospital, taking the death toll to 11, Ukraine’s State Emergency Services said.
At least 58 people were injured, they said.
Video from the scene showed heavy smoke billowing from the building, which was engulfed by fire. The mall measures about one hectare — roughly the size of two football fields — and the strike occurred around 4 p.m. local time, Solohub said.
“We don’t know how many more people might be under the rubble,” said Volodymyr Solohub, a regional official in the Poltava Oblast local administration.
The attack targeted a site in central Ukraine far away from the epicenter of Russia’s war, which has recently been focused in the east of the country.
British Prime Minister Boris Johnson said from that meeting that the attack showed the “depths of cruelty and barbarism” of Russian President Vladimir Putin, the UK’s PA news agency reported.
“This appalling attack has shown once again the depths of cruelty and barbarism to which the Russian leader will sink,” Johnson said, according to PA.
And Ukraine’s Foreign Minister, Dmitro Kuleba, said on Twitter: “Russia is a disgrace to humanity and it must face consequences. The response should be more heavy arms for Ukraine, more sanctions on Russia, and more businesses leaving Russia.”
Those issues were on the table at the summit in Germany. The G7 vowed to continue providing support for Ukraine “for as long as it takes” in a joint statement, and European Commission President Ursula von der Leyen told CNN on Monday that she would not “bet on Russia” winning the war.
The US plans to announce as early as this week that it has bought an advanced, medium-to-long-range surface-to-air missile defense system for Ukraine, a source familiar with the announcement told CNN.
However despite the outward confidence of Western leaders, Russia has seen military successes in eastern Ukraine in recent days.
Russian forces captured the city of Severodonetsk after weeks of fighting and have also picked up territory south of Lysychansk.
They have eliminated most Ukrainian defenses in the Luhansk region and consolidated control of a belt of territory in the south, bringing strategic benefits and blunting the effectiveness of Ukrainian counterattacks.
Russian forces have also stepped up attacks in the Donetsk region, getting slightly closer to the belt of industrial towns in the region that runs south from Sloviansk through Kramatorsk to Kostiantynivka.
“Zelensky was very much focused on trying to ensure that Ukraine is in as advantageous a position on the battlefield as possible in the next months as opposed to the next years, because he believes that a grinding conflict is not in the interest of the Ukrainian people,” US national security adviser Jake Sullivan said after the Ukrainian President met virtually with leaders at the G7.
Earlier, a source familiar with the matter told CNN that Zelensky told leaders he wanted the war to be over by the end of the year, before winter sets in.
CNN’s Tim Lister, Vasco Cotovio, Sebastian Shukla and Kostan Nechyporenko contributed reporting.