A man accused of murder in Rumbek central prison wears padlocked chains around his ankles as his fellow prisoners look on in Rumbek, in Southern Sudan, on Nov. 14, 2011. The prison in Rumbek, the capital of Lakes State (center), dates from 1948, at the time of Anglo-Egyptian occupation (1899-1956). Despite its vast oil reserves, Southern Sudan is one of the poorest countries in the world.

A prisoner said to be mentally unsound is held in solitary confinement at Rumbek central prison with a padlocked chain around his ankle, on Nov. 14, 2011.

Prisoners at the Rumbek central prison, with one wearing padlocked chains around his ankles, sit on bed, in Rumbek, in Southern Sudan, on Nov. 14, 2011.

A prisoner in Rumbek central prison with a padlocked chains around his ankles, is seen, in Rumbek, in Southern Sudan, on Nov. 14, 2011.