of hotly contested parts of the country. we should warn you many of these images you'll see in this report they are very disturbing. here's our report. >> reporter: this grave has been dug up before. the bodies are unidentified, reburied in the same spot. in video filmed at the time gruesome images of the corpses of four men. among many mass graves rebel fighters unearthed after they recaptured the town from radical fighters who once were their allies. now weeks late ear family hopes for closure. we found a foot and a shoe and a jacket she says. she's with her neighbor.