Rescuers working outside a warehouse premises damaged following massive Russian ballistic missile and drones strikes in the Ukrainian capital of Kyiv. AFP
Russia and Ukraine have significantly stepped up exchanges of deadly attacks in recent months.
A cloud of smoke hovered over the capital at sunrise, AFP journalists saw, after the attacks sparked fires in several locations in the region.
Over 40 people were wounded in the capital and its surrounding areas, local authorities said.
AFP journalists heard explosions in Kyiv after midnight (2100 GMT Tuesday), following Ukrainian air force warnings of incoming ballistic missiles.
One journalist reported seeing dark smoke and the acrid smell of burning lingering in the air hours later.
Ukraine shot down 98 of the 115 drones fired by Russia overnight, the air force said.
But it was unable to shoot down any of the missiles, preliminary statistics from the air force showed.
"Ballistic interceptors are what could have saved the lives of those killed today," Ukrainian President Volodymyr Zelensky said, referring to Kyiv's calls for more US-made Patriot interceptors.
Moscow said it hit "transportation, logistics, and distribution centres in the city of Kyiv and the Kyiv region that were involved in the storage, delivering various weapons and military cargo, as well as in the production and distribution of unmanned aerial vehicles."
Its own network of online retailer, Wildberries, has been hit around a dozen times since mid-July by Ukrainian forces.
The series of strikes killed at least eight people and have knocked out a large chunk of the company's storage capacity.
Kyiv accuses the e-commerce giant -- which employs tens of thousands of people and is sometimes referred to as "Russia's Amazon" -- of storing drone parts and helping the Russian army.
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