Detained Nigeria sect leader dead

The leader of an Islamic sect blamed for days of deadly violence in Nigeria has been killed in police custody, police officials say.

The news came just hours after security forces said they had captured Mohammed Yusuf in the city of Maiduguri.

Mr Yusuf led Boko Haram, which wants to overthrow the government and impose a strict version of Islamic law.

Hundreds of people have died in five days of clashes between his followers and security forces.

"He has been killed. You can come and see his body at the state police command headquarters," Isa Azare, spokesman for the Maiduguri police command, told Reuters news agency.

His bullet-riddled body was shown on state television, AFP news agency said.

Troops had stormed Boko Haram's stronghold on Wednesday night, killing many of the militants and forcing others to flee.

Mr Yusuf was arrested earlier on Thursday, after reportedly being found hiding in a goat pen at his parents-in-law's house.

BBC News website Africa editor Joseph Winter says Nigeria's security forces have a terrible reputation for brutality and human rights groups accuse them of frequent extra-judicial killings.