Lieutenant Colonel Bukar Suka Dimka was born in 1940 in what was then British Nigeria. Public records do not preserve many reliable details about his childhood, but his military education is well documented. In the early 1960s Nigeria was building a professional officer corps, drawing on overseas training to strengthen discipline, command standards, and modern military practice.
Dimka trained at the Australian Army Officer Cadet School at Portsea, in Victoria, a respected institution that at the time educated officers for Australia and, in some cases, for partner Commonwealth countries. On 13 December 1963 he was commissioned as a Second Lieutenant into the Nigerian Army after completing the course at Portsea. His Portsea training became a defining part of his public profile, because it placed him among a small number of Nigerian officers shaped by an external military tradition during the first decade after independence.
Over the following years Dimka rose through the ranks, serving during a period when Nigeria’s armed forces were expanding and becoming deeply entangled in national politics. By the mid 1970s he had reached the rank of Lieutenant Colonel.
Nigeria’s coup era and Dimka’s place in it
Nigeria entered a cycle of military takeovers in 1966. In January of that year a coup overthrew the civilian government, resulting in the killing of senior political and military figures. The country then experienced a counter coup in July 1966, driven largely by northern officers and shaped by intense ethnic and political grievances. Dimka is recorded as having participated in the July 1966 counter coup that toppled the government of General Johnson Aguiyi Ironsi.
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Those events hardened divisions within the armed forces and helped normalise the idea that governments could be made and unmade by force. The military became the dominant political institution, and officer networks, loyalties, and rivalries increasingly determined the direction of the state.
By 1975 a new military leadership emerged. General Murtala Ramat Muhammed became Head of State after a coup that removed General Yakubu Gowon. Muhammed’s government developed a reputation for speed and decisiveness, and his style attracted strong public attention. At the same time, the pace and direction of change created tensions within parts of the military, and those tensions formed part of the environment in which the events of February 1976 unfolded.
The Ikoyi ambush and the assassination of Murtala Muhammed
On the morning of 13 February 1976, Dimka led an attempted coup against the government of General Murtala Muhammed. The defining moment came in Ikoyi, Lagos, when Muhammed’s motorcade was ambushed. Muhammed was assassinated during the attack. He was killed alongside his aide de camp, Lieutenant Akintunde Akinsehinwa, and his driver, Sergeant Adamu Michika.
The killing was immediate and national in its impact. Nigeria had witnessed coups before, but the assassination of a serving Head of State in the course of a takeover attempt carried a particular shock. It created a vacuum that demanded an urgent response from the military hierarchy, and it tested the cohesion of the armed forces at the highest level.
The Radio Nigeria broadcast and the coup’s collapse
After the attack, Dimka made a broadcast over Radio Nigeria. In the planned announcement he presented the coup as a corrective action, claiming that the government suffered from corruption, indecision, arrest and detention without trial, weakness on the part of the leadership, and maladministration. The broadcast mattered for two reasons, it showed the plotters intended to seize national authority, and it also revealed the political language they believed could justify their actions.
However, the attempted takeover failed to secure the decisive support required across the armed forces. Within hours troops loyal to the government regained control of key installations and reasserted command. The coup attempt was crushed several hours after it began.
This rapid collapse underlined a central truth of military politics, the assassination of a leader and control of a radio station were not enough. Without broad backing from senior commanders and key units, the coup could not hold territory, maintain communications, or sustain authority.
The manhunt and Dimka’s arrest
With the coup defeated, Dimka fled Lagos. A nationwide search followed. Verified accounts state that after a three week manhunt he was arrested near Abakaliki in southeastern Nigeria on 6 March 1976. The circumstances of his capture have often been embellished in popular retellings, but the reliable record focuses on the essentials, he escaped immediate capture, he was pursued, and he was apprehended weeks later.
His arrest brought the central figure of the coup attempt into custody and allowed the government to move from emergency response into judicial punishment under military law.
Trial, execution, and the aftermath
Dimka was tried by court martial for treason and related offences connected to the coup attempt and the assassination. The proceedings took place within the military justice framework of the time. Following the court martial, Dimka and six co conspirators were executed by firing squad on 15 May 1976.
In the political aftermath, Lieutenant General Olusegun Obasanjo succeeded Muhammed as Head of State. The new leadership moved to stabilise the government and maintain continuity in state administration. The failure of the coup, and the severity of the response, reinforced internal discipline within the armed forces and demonstrated the determination of the military hierarchy to suppress insurrection.
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Why the 1976 coup still matters
Dimka’s story endures because it sits at the intersection of personal ambition, military factionalism, and national trauma. He was an officer trained abroad in a professional setting, yet he became the leading figure in an attempted seizure of state power that resulted in the assassination of Nigeria’s leader. The episode shows how fragile governance can become when political authority depends on force rather than institutions, and how quickly events can reshape a country’s direction.
The coup attempt also remains a major reference point in Nigeria’s broader history of military rule, because it combined a high profile assassination, a public radio declaration, and a swift military counter response that restored control within hours. Even decades later, the events of 13 February 1976 are remembered as a day when Nigeria’s leadership changed in gunfire, and the state’s survival depended on the speed of loyal forces to restore command.
Author’s Note
The story of Bukar Suka Dimka is a warning about what happens when power is contested inside the armed forces rather than through stable institutions, his rise from overseas trained officer to coup leader, the Ikoyi ambush that killed Murtala Muhammed, the Radio Nigeria broadcast that tried to justify the takeover, and the swift collapse, manhunt, trial, and execution, all show how quickly a nation can be pushed into crisis, and how lasting the consequences can be.
References
Max Siollun, Oil, Politics and Violence, Nigeria’s Military Coup Culture (1966–1976), Algora Publishing
Nowa Omoigui, The Nigerian Military, A Sociological Analysis of Authority and Revolt 1960–1967
Toyin Falola and Matthew M. Heaton, A History of Nigeria, Cambridge University Press
J. Isawa Elaigwu, The Politics of Federalism in Nigeria, Adonis and Abbey Publishers
