Ukrainian serviceman wave a flag with writing reading in Ukrainian "Glory to Ukraine", top, and "Death to the enemies" as they ride atop of a tank in the Kharkiv region, eastern Ukraine, Monday, May 16, 2022. (AP Photo/Bernat Armangue)
KYIV, Ukraine — Ukraine’s human rights ombudsman said the Russian military was holding more than 3,000 civilians from Mariupol at another former penal colony near Olenivka in the Donetsk region of eastern Ukraine.