Nigeria's Shiite movement says the army is planning attacks on processions scheduled Nov. 20, and the London-based Islamic Human Rights Commission is asking Nigeria's president to ensure protection.

The Nigerian army fatally shot some 300 Shiites in December and buried them secretly in a mass grave, according to an independent government-appointed committee. The Shiites say more than 1,000 were killed and dozens remain in illegal military detention including leader Ibraheem Zakzaky. He was shot seven times and lost an eye.

Nigeria's military did not respond to requests for comment.

In October, the Shiites' Iranian-inspired Islamic Movement in Nigeria was outlawed in its home state of Kaduna, a move analysts warn could spark another Islamic uprising.

But Shiites, who have been attacked by Muslim extremist group Boko Haram, insist they are peaceful.