Yemen's leaders say secret prisons are real. Groups that work with the UAE ran them. The BBC saw old places for UAE soldiers.
Prisoners were in bad places. Some were in big metal boxes. These boxes were like small rooms.
People say UAE soldiers hurt them. They say they were treated not good. The BBC showed pictures of the boxes. They were used as rooms for people.
The war in Yemen is now ten years. Yemen's leaders and the UAE fought bad groups. The UAE took its soldiers home. Now Yemen's leaders are in charge.
Yemen's leaders let the BBC see the prisons. This is good. It shows what prisoners said is true. News people have a hard time in Yemen. These stories are important.