Additionally, 13 civilians have been injured in tonight's attacks, writes the country's president, Volodymyr Zelenskyj, on X.
According to Zelenskyj, 315 drones and seven missiles were fired in the attack. Two of the missiles were manufactured in North Korea, according to the president.
"Unfortunately, there are fatalities. My condolences to the families", he writes and urges the USA and Europe to pressure Russia to the negotiating table.
The Russian Ministry of Defence claims, in turn, that they carried out an attack against military targets in the Ukrainian capital.
Both buildings and cars are said to have started burning during the attack on Kyiv.
"Stay in the shelters! The massive attack on the capital continues", wrote Kyiv's mayor Vitalij Klytjko on Telegram during the night.
In the large port city of Odessa in southern Ukraine, residential buildings as well as maternity and healthcare facilities were hit, according to local authorities.
The attacks occur after Russia sent a total of 479 drones and 20 missiles against Ukraine during the previous night. According to Ukraine, it was more drones than any other night in the over three-year-long war. The Ukrainian air defence, however, managed to shoot down the majority of them.