On the eve of a general parliamentary session scheduled for November 5, 1605, Sir Thomas Knyvet, a justice of the peace, found Guy Fawkes lurking in a cellar of the Parliament building. Fawkes was detained and the premises thoroughly searched. Nearly two tons of gunpowder were found hidden within the cellar. In his interrogation, Fawkes revealed that he was a participant in an English Catholic conspiracy organized by Robert Catesby to annihilate England's entire Protestant government, including King James I. The king was to have attended Parliament on November 5. Over the next few months, English authorities killed or captured all of the conspirators in the "Gunpowder Plot" but also arrested, tortured, or killed dozens of innocent English Catholics. After a brief trial, Guy Fawkes was sentenced, along with the other surviving chief conspirators, to be hanged, drawn, and quartered in London. On January 30, 1606, the gruesome public executions began in London, and on January 31 Fawkes was called to meet his fate. While climbing to the hanging platform, however, he jumped from the ladder and broke his neck, dying instantly.