By Jaroslav Lukiv
BBC News
Russia has launched more than 50 missiles targeting critical infrastructure across Ukraine, including the capital Kyiv, causing power and water outages, Ukraine says.
At least two blasts were reported in Kyiv. One resident told the BBC his district was without electricity.
In the north-eastern city of Kharkiv, energy facilities were hit.
The strikes come after Russia blamed Ukraine for a drone attack on its Black Sea Fleet in the annexed Crimea.
On Monday morning, missile strikes were also reported in the central Vinnytsia region, as well as Dnipropetrovsk and Zaporizhzhia in the south-east, and Lviv in western Ukraine.
A facility at the Dnipro hydroelectric power plant in the Zaporizhzhia region was also reportedly hit.
In Kyiv, a facility which powers 350,000 apartments was damaged, with engineers urgently deployed to restore the supply.
It was not immediately known if there were any casualties.
Residents in the regions under attack were urged to remain in shelters, amid fears more strikes could follow.
Ukraine's Air Force spokesman Yuriy Ihnat told Ukrainian TV that Russia had used its strategic bombers to carry out its "massive" strikes.
Ukraine's military later said that 44 out of more than 50 cruise missiles launched on Monday morning had been shot down.
Ukrainian Foreign Minister Dmytro Kuleba said that "instead of fighting on the battlefield, Russia fights civilians".
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