Shelling is ongoing near the largest nuclear power plant in Europe.
Russian President Vladimir Putin's "special military operation" into neighboring Ukraine began on Feb. 24, with Russian forces invading from Belarus, to the north, and Russia, to the east. Ukrainian troops have offered "stiff resistance," according to U.S. officials.
The Russian military has since launched a full-scale ground offensive in eastern Ukraine's disputed Donbas region, capturing the strategic port city of Mariupol and securing a coastal corridor to the Moscow-annexed Crimean Peninsula.
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Russians fired multiple rocket launchers on the city of Lysychansk in Ukraine's eastern Luhansk region, striking civilians who were collecting drinking water, according to Luhansk region governor Serhiy Haidai.
Eight have been killed and more than 20 are injured, Haidai said.
Three people were killed and at least 15 were wounded in shelling in Kharkiv, according to Natalia Popova, adviser to the head of the Kharkiv Regional Council.
Children were among the victims, Popova said.
A Russian controlled oil drilling platform in the Black Sea was targeted by Ukrainian shelling on Sunday, the second attack in a week, Russia's state-run media outlet TASS reported.
A spokesperson for Crimea's emergency services reported that no one was injured in the attack on the platform operated by the Chernomorneftegaz oil and gas company.
Russia-backed officials seized Chernomorneftegaz's oil-drilling platforms from Ukraine's national gas operator Naftogaz as part of Moscow's annexation of the Crimea peninsula in 2014, according to Reuters.
This is the second attack in a week on the same Chernomorneftegaz oil-drilling platform.
On June 20, Ukrainian forces shelled the platform in the Black Sea, injuring three of the 109 people on the drilling rig at the time, according to Crimea officials. Seven people remain missing, the officials said.
More than 90 people were evacuated from the platform after the previous attack and 15 people had stayed behind to guard operations, Sergey Aksyonov, the governor of Russian-controlled Crimea.
About 250 Ukrainian civilians have been evacuated from a chemical plant where they sought shelter in the besieged city of Severodonetsk in Eastern Ukraine, an official said.
Rodion Miroshnik, the Luhansk People's Republic ambassador to Russia, said the civilians were evacuated safely from the Azot chemical plant in Severodonetsk.
"Servicemen of the LPR People's Militia evacuated another about 250 people, including little children, from the premises of the Severodonetsk Azot plant," Miroshnik said on social media Sunday.
He added that the evacuation came a day after about 200 civilians were evacuated from the chemical plant.
Following months of heavy fighting, Russian troops took complete control of the Severodonetski over the weekend, according to Oleksandr Striuk, chief of the city's military administration.
