More strikes have been reported across Ukraine, days after one of Russia's most intense bombardments of the war.
Parts of Ukraine have seen their first snowfall of the season, but many people cannot heat their homes as Russia continues to pound their power grid.
A gas production plant in the east and a missile factory in Dnipro were among the latest targets. Moscow has looked to justify its recent strikes by accusing Kyiv of "unwillingness" to negotiate.
One of Ukraine's largest cities, Dnipro, was among those targeted early on Thursday. Prime Minister Denys Shmyhal said the Pivdenmash factory - which produces missiles - had come under attack.
The capital, Kyiv, was just one place where air raid sirens sounded. At about 08:00 local time (06:00 GMT), mobile phones started pinging with official warnings of a new missile attack across Ukraine.
Ukrainian President Volodymyr Zelensky said Russia did not want peace, but instead was bringing his compatriots "only as much pain and suffering as possible".