Further on, Ibn al-Athir describes the failed Muslim siege of Antioch that ended in defeat. One event that Ibn al-Athir describes during this failed siege was the finding of the Holy Lance by Peter Bartholomew, but framed in the context of Peter Bartholomew having buried a lance in a certain spot prior to such "discovery." Regarding the siege, Ibn al-Athir attributes the failure to Qawam ad-Daula Kerbuqa, who led the Muslim charge and failed for treating the Muslims "with such contempt and scorn" and prevented the Muslims from killing the Franks when given the opportunity. Ibn al-Athir's description of the siege ended in the overwhelming victory of Frankish armies against the Muslims. This was but the first step to the conquest of Jerusalem by the crusaders in 1099.