 Political parties and opposition groups complained of harassment by the NSO, particularly the Unity Party of Nigeria (UPN) headed by Chief Obafemi Awolowo – a keen rival of the party in power, the National Party of Nigeria (NPN) – was constantly hounded by the NSO.Shinkafi explained these accusations in an interview; "Before the military intervention we had the UPN, headed by Chief Obafemi Awolowo.We had the GNPP and the opposition parties.