Police in Nigeria are investigating the discovery of rotting bodies and skeletons in an abandoned building branded a "house of horror".
Police rescued several severely malnourished people founded wandering in jungle near the building in the southwestern city of Ibadan, and more were found shackled in leg chains inside.
The discovery came after motorcycle taxi riders reported that some of their members had gone missing and were believed to have been kidnapped.
"When we got to the abandoned building in the Soka community of Ibadan, we saw decomposed corpses, skeletons and skulls in the building and surrounding bushes," Oyo state police spokeswoman Olabisi Ilobanafor said.
"Some seven malnourished human beings looking like living skeletons were also rescued in the bush surrounding the building. One of them died on the spot while we were there," she said on Sunday.
Ilobanafor said police had launched a murder investigation and arrested six suspects at the scene in Ibadan, the capital of Oyo state and the third largest city in Nigeria. They included five security guards allegedly armed with guns and bows and arrows.