More 200 people receiving illegal military training in Benishangul-Gumuz State, West of the Ethiopia have been arrested.
Report says they were apprehended by the army and police in Asosa district close to the Sudanese border.
Little is known about the group called the Liberation Movement of Berta People that has reportedly given most of the training.
Tens of thousands of people have been displaced from the area by ethnic clashes.
Last October there were reports that around 50 young men were arrested in a forest camp in the same area where they were being trained.
Source: Voice of Nigeria