 According to Dahmer, Sinthasomphone was initially reluctant to the proposal, before changing his mind and accompanying Dahmer to his apartment, where the youth posed for two pictures in his underwear before Dahmer drugged him into unconsciousness and performed oral sex on him.On this occasion, Dahmer drilled a single hole into Sinthasomphone's skull, through which he injected hydrochloric acid into the frontal lobe.Before Sinthasomphone fell unconscious, Dahmer led the boy into his bedroom, where the body of 31-year-old Tony Hughes, whom Dahmer had killed three days earlier, lay naked on the floor.