This was due to the fact that, among a number of other grievances, the northern officers were of the view that General Aguiyi-Ironsi had been far too lenient with Major Nzeogwu and his fellow mutineers after 15 January Igbo coup attempt in which many northern (Hausa - Fulani) and western (Yoruba) political leaders and senior military officers had been brutally murdered.The suspicion by the northern officers that there was some kind of collusion and understanding between the Nzeogwu group and General Aguiyi-Ironsi was further fuelled by the fact that Aguiyi-Ironsi himself was of Igbo ethnic stock.. 
Orúkọ tí gbogbo ènìyàn mọ̀ ó sì ní Efe Irele.Ìbẹ̀rẹ̀ ayé rẹ̀ àti isẹ́ rẹ̀ Efe Irele bẹ̀rẹ̀ iṣẹ́ aláwòṣe rẹ̀ ní ọmọ ọdún márùndín.. 