Russian strikes killed 14 people in Ukraine on Friday, officials said, as Moscow launched the latest in an increasing number of daytime barrages.

Moscow has been firing aerial broadsides at Ukraine throughout its more than four-year invasion, mostly at night, but in recent weeks it has stepped up daytime attacks.

The Russian military used more than 500 drones and dozens of missiles in its salvo on Friday, according to the Ukrainian air force.

Ukrainian President Volodymyr Zelensky accused Russia of intensifying attacks ahead of Catholic Easter on Sunday, "turning what should have been silence in the skies into an Easter escalation".

Images from Ukrainian emergency services showed damaged residential buildings, with a block of flats ripped open and rubble strewn on a street.