On 3 April 1970, a protester was killed by the police. This was followed on 13 April by the resignation of A. N. R. Robinson, Member of Parliament for Tobago East. On 18 April sugar workers went on strike, and there was the talk of a general strike. In response to this, Williams proclaimed a State of Emergency on 21 April and arrested 15 Black Power leaders. In response to this, a portion of the Trinidad and Tobago Defence Force, led by Raffique Shah and Rex Lassalle, mutinied and took hostages at the army barracks at Teteron. Through the action of the Trinidad and Tobago Coast Guard the mutiny was contained and the mutineers surrendered on 25 April.