Strong explosions can be heard in Mykolayiv, city mayor Oleksandr Senkevych has said and called on residents to take shelter immediately.
The head of the Mykolayiv regional administration, Vitaliy Kim, said that the city centre is under continuous barrage fire.
He added later that at least two people got killed and 11 wounded. He asked residents to remain in shelters and abstain from going out without urgent need.