Bodies of children aged four and 10 were found along with the burnt body of a 17-year-old boy in Hostomel and Bucha, in the Kyiv region, the statement said.
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The statement added that a father and his minor son were killed in the Chernobyl zone near the village Dytiatky in the Kyiv region when Russian servicemen fired at a car stopped at a roadside.
Seven children died as a result of a Russian strike on the Kramatorsk train station, the statement said.
On Wednesday, the Ukrainian Prosecutor General's Office said that the burnt bodies of a 16-year-old girl and a 10-year-old boy had been found in the villages of Borodianka, northwest of Kyiv, and Korolivka, in western Ukraine.