investigation has uncovered evidence of torture, mass detention and execution in ethiopia tigre region, a story we've been covering for months. tigre is a region in northern ethiopia, rocked by conflict in almost a year. the ethiopian government troops and their allies have been clashing with local fighters. the local government says this is a law enforcement campaign but the reality on the ground is frankly quite different and now bodies are turning up again, carried down the river that flows through a ethiopian town and into the neighboring country of sudan. for much of the conflict the united states, united nations and international community have failed to hold high-level ethiopian officials to account for their role and atrocities committed in tigre and now cnn's findings point a renewed campaign of ethnic cleansing, one which bears all the hallmarks of genocide as defined by international law. we must warn you that the investigation which we're about