The 1966 Nigerian counter-coup, or the so-called "July Rematch", was the second of many military coups in Nigeria. It was masterminded by Lt. Colonel Murtala Muhammed and many northern military officers. The coup began as a mutiny at roughly midnight on July 15th 1966 and was a reaction to the killings of Northern politicians and Officers by some soldiers on January 15, 1966 (see 1966 Nigerian coup d'état). The July mutiny/counter coup resulted in the murder of Nigeria's first military Head of State General Johnson Aguiyi-Ironsi and Lt Colonel Adekunle Fajuyi (who was hosting a visiting Aguiyi-Ironsi) in Ibadan by disgruntled northern non-commissioned officers (NCOs). Upon the termination of Ironsi's government, Lt. Colonel Yakubu Gowon was appointed Head of State by the July 1966 coup conspirators.