Activities of gang groups prompted Governor Babagana Zulum to order a security clampdown.
According to Mr Abdullahi, last Tuesday, two commanders, four fighters and their 24 family members also surrendered.
ECOWAS and the United Nations Institute for Disarmament Research promised to fight against the illicit proliferation of weapons in the region.
Currently there are the Cooperative for Development of the Congo, the Forces Démocratique pour la libération de Rwanda, and several others.
The ex-militants urged the government to come to their assistance and save their families from untold hardship since 2017 when they dropped their arms.
