Ukraine Combs Mass Burial Site, Says Russia 'Leaves Death'

In Ukraine, potential war crimes are being uncovered as authorities discover mass graves in areas previously occupied by Russian forces. A grave near the recaptured town of Izium is marked as containing 17 Ukrainian soldiers, but police suggest up to 400 bodies may be buried there. In Kharkiv, another city once under Russian control, bodies have been found showing signs of torture. Ukraine is committed to conducting a full investigation into these findings.

In which city, besides the one with the mass grave, were bodies also found?

What is the response of Ukraine regarding the investigation of the mass grave?