The coup was counter-acted by another successful plot, supported primarily by Northern military officers and Northerners who favoured the NPC, it was engineered by Northern officers, which allowed Lt Colonel Yakubu Gowon to become head of state. This sequence of events led to an increase in ethnic tension and violence. The Northern coup, which was mostly motivated by ethnic and religious reasons was a bloodbath of both military officers and civilians, especially those of Igbo extraction.
The violence against the Igbo increased their desire for autonomy and protection from the military's wrath. By May 1967, the Eastern Region had declared itself an independent state called the Republic of Biafra under the leadership of Lt Colonel Emeka Ojukwu in line with the wishes of the people. The Nigerian Civil War began as the Nigerian (Western and Northern) side attacked Biafra (South-eastern) on July 6, 1967 at Garkem signalling the beginning of the 30 month war that ended in January 1970. Estimates in the former Eastern Region of the number of dead from hostilities, disease, and starvation during the thirty-month civil war are estimated at between 1 million and 3 million.


