Without claiming the strike, Ukraine's military said the death toll from a strike in the town of Makiivka in the Moscow-controlled part of the eastern region of Donetsk was much higher.
Ukraine's biggest nuclear plant, which is surrounded by Russian troops, has lost all external power needed for vital safety systems for the second time in five days.
Russian troops occupy the plant and the surrounding area, including the nearby town of Energodar where thousands of Ukrainian workers continue to maintain the facility.Russian troops occupy the plant
Ukraine's army said it had entered Lyman on Saturday, prompting Moscow to announce the "withdrawal" of its troops from the town towards "more favourable lines".
The final document needed approval of all countries at the conference that are parties to the treaty aimed at curbing the spread of nuclear weapons.
The Zaporizhzhia plant -- Europe's largest nuclear facility -- has been occupied by Moscow's troops since the opening weeks of the war.
Defense Minister Oleksii Reznikov said Ukraine was "entering a new - long-term - phase of the war."
The bloody battle came amid growing speculation that President Vladimir Putin wants to present the Russian people with a battlefield triumph.
In his late-night video address, Zelenskyy called it "an achievement of millions of Ukrainians, of everyone who on Feb 24 made the most important decision of their life to fight."
Since the Russian invasion, the United States has provided Ukraine with a flood of light arms, like the shoulder-fired Javelin anti-tank missiles that have become a symbol of Ukrainian resistance.
Putin approves bringing ‘volunteer’ fighters from the Middle East, elsewhere to join Russia’s Ukraine offensive
Russia knew of “more than 16,000 applications” from countries in the Middle East, many of them from people who he said helped Russia against the Islamic State group.