text: Some of the men come from families with close links to the government. One has escaped from custody.
  The victim, Zouhoura, is the daughter of an opposition leader and was threatened with death if she spoke about the attack.
  A video of her rape sparked a wave of protests in Chad in February.
  Africa Live: More on this and other news stories
target: Seven men have been sentenced to 10 years for the rape and kidnapping a schoolgirl in the Chadian capital, Ndjamena.