(CNN)The family of missing teenager Nora Quoirin, who vanished from a remote resort in Malaysia on Sunday, say they believe the 15-year-old Londoner was abducted.
Quoirin's parents say they found her bedroom empty and a window open on Sunday morning.
The teenager has a learning disability and her parents said they have "no reason to believe she wandered off and is lost."
Malaysian police, who are leading a large search operation in the surrounding jungle, have not ruled out an abduction. But they have said there are no initial signs of foul play, according to the UK Press Association (PA).
Quoirin's family, however, insisted that she would not have left her bedroom herself.
"Nora's family believe she has been abducted," they said in a statement carried by PA. "We are especially worried because Nora has learning and developmental disabilities, and is not like other 15-year-olds."
"She looks younger, she is not capable of taking care of herself, and she won't understand what is going on," they added. "She never goes anywhere by herself. We have no reason to believe she wandered off and is lost."
The Dusun resort, where the family were staying, is in a remote area 800 feet above sea level in the Titiwangsa mountain range. It contains six houses, each surrounded by rainforest, and has capacity for just 20 guests.
In a statement posted online, the management of the Dusun resort said that