Nigeria's military coup of 1983
27 September 2010 Last updated at 11:11 BST
By the end of 1983, the civilian government in Nigeria was overthrown by a military coup led by Major-General Muhammadu Buhari.
The coup was the fifth after independence in 1960, with troops taking key positions around the capital in Lagos.
Watch the BBC report on the coup from 31 December 1983.