A mentally-ill man has killed at least nine persons in Adamawa State, SaharaReporters has gathered. The incident happened on Wednesday evening in Libbo Ward, Kate-Gamji village in the Sheleng Local Government Area of the state. The man, identified as Ali Denham, was said to have embarked on a killing spree for reasons unknown to members of the community. Irked by the development, some angry youths in the village surrounded the man, disarmed him and beat him to death.