In the early evening of 25 March 1199, Richard was walking around the castle perimeter without his chainmail, investigating the progress of sappers on the castle walls. Missiles were occasionally shot from the castle walls, but these were given little attention. One defender, in particular, amused the king greatly—a man standing on the walls, crossbow in one hand, the other clutching a frying pan he had been using all day as a shield to beat off missiles. He deliberately aimed at the king, which the king applauded; however, another crossbowman then struck the king in the left shoulder near the neck.He tried to pull this out in the privacy of his tent but failed; a surgeon called a "butcher" by Howden, removed it, "carelessly mangling" the King's arm in the process.

The wound swiftly became gangrenous. Richard asked to have the crossbowman brought before him; called alternatively Pierre (or Peter) Basile, John Sabroz, Dudo,[115][116] and Bertrand de Gourdon (from the town of Gourdon) by chroniclers, the man turned out (according to some sources, but not all) to be a boy. He said Richard had killed his father and two brothers, and that he had killed Richard in revenge. He expected to be executed, but as a final act of mercy Richard forgave him, saying "Live on, and by my bounty behold the light of day", before he ordered the boy to be freed and sent away with 100 shillings.