A Nigerian court has accused five officers of killing the leader of a radical Muslim sect and of committing an act of terrorism in Africa's most populous nation.
Court documents on Tuesday show that the officers were charged with "unlawfully killing one Mallam Mohammed Yusuf and his followers" in Abuja in 2009. They are also accused of conspiring to commit a "terrorist act."
The officers all pleaded not guilty to all charges.
Nigerian police said that seven suspects accused of killing Yusuf were arraigned in a federal court in northern Nigeria in late February. The court documents did not account for the two other suspects.
Yusuf died while in police custody in July 2009. He led a radical Muslim sect locally known as Boko Haram which has claimed responsibility for a series of blasts.