(CNN) When Sudanese refugee Aziz Adam landed on Christmas Island, in Australian territory, he thought his days of horror and torture were over. Fleeing without his family, under threat of death for being a member of the wrong tribe in Sudan, he told CNN he would rather die in the ocean than be tortured in his home country. But when he was transferred to Australia's remote detention center on Manus Island in 2013, he realized his trauma had only just begun. "They just want us to die. For the last three years we were under heavy, systematic torture (which) aim to force us to go back ... Hundreds of us lost their minds completely," he said.Exclusive: Two Manus Island detainees react to the news of the detention center's closureAt least 800 men are still in the center, some of whom have been there for three years 
 Question:"When I came to Australia first, I thought (I was) in safe hands and place, I started to think how to get my family out of that mess in _.
Sudanese