Buka Suka Dimka ( ? – May 15, 1976), a Lieutenant Colonel in the Nigerian army (an officer of the army physical training corps), led the February 13, 1976 abortive military coup against the government of General Murtala Ramat Mohammed. Dimka also participated in the Nigerian Counter-Coup of 1966 which toppled the government of General Aguiyi Ironsi.
Dimka, then Lieutenant with the Nigerian Military Training College in Kaduna, was one of the many officers of northern Nigerian origin (including Lt Colonel Murtala Muhammed (coup leader who Dimka would ironically conspire against and murder 10 years later), 2nd Lieutenant Sani Abacha, Lieutenant Muhammadu Buhari, Lieutenant Ibrahim Bako, Lieutenant Ibrahim Babangida, and Major Theophilus Danjuma among others), who staged what became known as the Nigerian Counter-Coup of 1966 because of grievances they felt towards the administration of General Aguiyi Ironsi’s government which quelled the January 15, 1966 coup. Dimka along with Lieutenant Dambo are alleged to have shot and killed Lieutenant Colonel Michael Okoro, Commander of the 3rd Battalion during the July mutiny. Another act of notoriety from the July mutiny was Dimka’s pursuit and probable intent to murder his Brigade Major (Samuel Ogbemudia).
Before the mutiny, Major Ogbemudia had detained Lieutenant Dimka for violating an order forbidding unauthorized troop movement. Under interrogation by Ogemudia, Dimka complained of ethnic victimization and was subsequently released by Ogbemudia. Vexed by Ogbemudia’s treatment of him, Dimka hatched a plot to kill Major Ogbemudia. Fortunately, Ogbemudia was tipped off by Major Abba Kyari and Colonel Hassan Katsina who provided an escape Landrover armed with an SMG gun. Dimka marshaled a group of northern soldiers who pursued Ogbemudia (sometimes shooting) all the way from Kaduna to Owo, Ondo State where Ogbemudia abandonded his Landrover (which had run out of fuel) and scaled a 6 foot fence into a dense jungle to escape Dimka and his soldiers.
Sourced from: http://www.dawodu.com/dimka.htm