On the evening of 24 April 1878, drover J. Fisher McMichael was washing himself at a camp near Bundaberg when Sam Ah Poo, the cook on his droving run, struck him from behind with an axe. The blow opened a gash four inches long beside the backbone. As McMichael fell, Ah Poo swung twice more, shouting 'I killoo you now, you no killeemo.' McMichael survived only four hours. One of the drovers wrestled Ah Poo to the ground; when bound, Ah Poo appeared entirely calm, described by a witness as like one who had got a load off his mind.
Tried at the Toowoomba Winter Assizes on 22 July 1878 before Justice Lilley, Ah Poo's defence argued insanity and delusion. The jury disagreed, returning a guilty verdict after thirty minutes. On the morning of 19 August 1878, Ah Poo walked to the scaffold at Toowoomba Gaol with firm steps, requiring little support from the warders. The bolt was drawn at eight o'clock and death followed almost instantaneously.
