Ukraine's capital Kyiv is again under a massive overnight Russian drone attack, local officials say, with at least 10 people reported injured and fires burning across the city, BBC reported.

Authorities in Kyiv say drone wreckage has hit the roof of a residential building in the central Shevchenkivskyi district.

Footage on social media, as yet unverified by the BBC, shows explosions in the night sky, as air defence units begin repelling the attack. Ukraine's military has also warned of a threat of a ballistic missile attack.

Last night, Ukraine reported the biggest ever aerial attack from Russia, after 728 drones and 13 cruise or ballistic missiles struck cities around the country in multiple waves, according to BBC.