Nigeria, Nov. 11 -- A human rights body, Amnesty International Nigeria, has said it uncovered a particular group of gunmen terrorising residents of Nigeria's South-east.

The human rights body said in a statement posted on its X handle on Sunday that the group, otherwise known as "unknown gunmen", often refer to themselves as "Umu Oma."

"Umu Oma" is an Igbo expression which simply means the "good ones."

Amnesty explained that its research showed the armed group was involved in various terror attacks across the South-east region.

"Amnesty International's research shows that the 'Umu Oma' gunmen usually invade communities - moving from house to house - in search of weapons. They attack vigilante offices and take away arms," it said.

"In...