Irish teenager Nora Anne Quoirin's had succumbed to gastrointestinal bleeding due to duodenal ulcer complicated by perforation, according to the police.<br /><br />Negeri Sembilan police chief Mohamad Mat Yusop said the autopsy on Nora Anne also found that she died two or three days before her body was found.<br /><br />The body of the 15-year-old special-needs girl was found about 2.5km from The Dusun eco-resort in Pantai, near Seremban from where she went missing on Aug 4, a day after she and her family checked in for a holiday.