A child was among at least three people killed in the latest Russian drone attacks in Ukraine's northeastern region of Sumy, local authorities confirmed Tuesday.

It came a day after Ukraine said Russia carried out dozens of drone and missile strikes on its territory, killing 10 people in the capital Kyiv.

Diplomatic efforts to end the three-year war have stalled, with the last direct meeting between Kyiv and Moscow almost three weeks ago and no follow-up talks scheduled.

"We have information about three dead. Among them is an 8-year-old boy," said Oleg Grygorov, head of the Sumy region's military administration.

The boy's body was pulled from the rubble of a destroyed house, he added.