On 4 May 1980, seven terrorists holding twenty-one people captive in the Iranian Embassy in London's Prince's Gate, executed their first hostage. They threatened to kill another hostage every thirty minutes until their demands were met. Minutes later, armed men in black overalls and balaclavas shimmied down the roof on ropes and burst in through windows and doors. In seconds all but one of the terrorists had been shot dead, the other captured.