In subsequent years, there was much unrest in the Surinamese army, particularly on working conditions. In 1980, non-commissioned officers founded a new Surinamese military union: the BoMiKa (Association of Military Framework). The establishment of the BoMiKa was unacceptable to Elstak and Prime Minister Henck Arron. The three board members were put in prison. As a result, on 25 February 1980, sixteen sergeants led by Dési Bouterse overthrew the Arron government with a violent military coup d'état, now known as the Sergeants Coup. Colonel Elstak was deposed by the coup perpetrators as commander and replaced by Bouterse.