This month's dramatic Ukrainian advance north of Kharkiv drove Russian forces back across the border, and uncovered evidence of torture under their occupation. Ukraine's military focus has shifted east, but police and prosecutors have taken over the border community of Kozacha Lopan, and have launched an investigation. The small town's police station was used during the occupation as a base by a local pro-Russian militia, and alleged torture victims have come forward to testify. "I felt like they were pouring molten metal into me, inside of me," one man testifies to AFP. IMAGES AND SOUNDBITES