Yemen's government says secret prisons are real. Groups linked to the UAE ran them. The BBC saw old UAE military places. Prisoners were in bad places. Some were in shipping containers. These were like small rooms.
People said UAE forces hurt them. They said they were treated badly. The BBC showed pictures of containers. They were used as cells. Names were on the outside. This shows how long people stayed there. This matches what people said.
The war in Yemen is ten years old. The UAE and Yemen's government fought rebels. The UAE took its soldiers away. Yemen's government took control of the south. Alliances are changing.
Yemen's government let the BBC see the prisons. This could mean more checks. This proves what prisoners said. It is hard for news people in Yemen. These reports are important. They show war problems.