Nigerian security forces are frequently alleged to carry out arbitrary arrests , torture , forced disappearances , assassinations and extrajudicial summary executions . These abuses typically occur within the context of the Nigerian government 's security operations or are directed against political and religious organizations and individuals . Several instances of mass killings of political opponents and agitators by security forces have been reported . On 12-14 December 2015 , the Nigerian Army carried out a massacre of 347 members of the Islamic Movement of Nigeria ( IMN ) in Zaria , Kaduna State and buried the bodies in mass graves
massacre
2015 Zaria massacre
Human rights in Nigeria