Nigeria, Feb. 26 -- Amnesty International Nigeria has called on authorities to investigate what it described as a recurring pattern of road blockades and killings of travellers in Plateau State, warning that the trend poses a grave threat to the rights to life and freedom of movement.

In a statement on Wednesday, the rights group said armed youths recently blocked a road along the Nding axis of Barkin Ladi Local Government Area and killed four travellers.

The incident, it noted, was followed by a reprisal attack in Dorowa Babuje village where seven people were killed.

"The Nigerian authorities must investigate Plateau's endemic security crisis that involves blocking of roads and killing of travellers," Amnesty said.

"This pattern of a...