Police in Malaysia have said there is no evidence that Nora Quoirin was abducted, putting her death down to intestinal bleeding.
The 15-year-old, who disappeared from a jungle resort, had been dead for two or three days by the time she was found on Tuesday, investigators said after a post-mortem examination.
Nora, who was born with the brain defect holoprosencephaly and was described by her family as "vulnerable", went missing from the resort of Dusun on Sunday August 4.
Her body was found beside a small stream about 1.6 miles (2.6km) from the area where she had been on holiday with her parents and two siblings and was unclothed when it was discovered, police had previously said.
The Quoirins said her condition meant she was not independent and had difficulty walking.
But Negeri Sembilan state police chief Mohamad Mat Yusop said on Thursday that the post-mortem examination had found no evidence that she had been abducted or raped.
He said she had died from intestinal bleeding due to starvation and stress.