UPDATE : Two people die in strikes on residential buildings in Kherson, official says

 UPDATE : Two people die in strikes on residential buildings in Kherson, official says

Overnight there have also been reports of strikes in Kherson - in southern Ukraine.

Kherson regional governor Oleksandr Prokudin says residential buildings came under fire last night, and two high-rise buildings were damaged.

He adds that a couple - a 56-year-old man and a 54-year-old woman - were killed in the attack.

Warnings have continued to be issued from the Ukrainian Air Force about the possibility of further aerial strikes on Kharkiv in the past 15 minutes.

We'll bring you more information when we have it.

Kharkiv's mayor, Ihor Terekhov, posted updates on social media app Telegram last night as the attack unfolded.

In the early hours, he said the city was experiencing the most powerful attack of the war so far, describing at one point how "at least 40 explosions" had been heard within an hour and a half.

Preliminary information indicates 18 apartment buildings and 13 other homes have been damaged, he says, describing the attack as "open terror".

As we've been reporting, the mayor says at least three people have been killed.