In the short skirmish that ensued, Crabbe tried to torture Harry with the Cruciatus Curse and shot the Killing Curse at Ron and Hermione, who both dived out of the way. Crabbe ended up conjuring Fiendfyre destroying much of the Room and accidentally killing himself and the Horcrux, while Harry, Ron, and Hermione fled on broomsticks saving Draco and Goyle from certain death.