Police searching for a British teenager missing in Malaysia are to play loudspeaker recordings of her family in a bid to find her.

Detectives believe Nora Quoirin, who has learning difficulties, may be lost in the jungle and will move towards the familiar sound.

The youngster, 15, vanished from the Dusun Tropical Rainforest Resort, where her family were staying, on Sunday.

Her parents raised the alarm when they found her bedroom empty that morning and the window open.

Meabh and Sebastian Quoirin, who live in London, say they fear she has been abducted.

Search for missing Nora Quoirin in Malaysia Show all 9 1 /9 Search for missing Nora Quoirin in Malaysia Search for missing Nora Quoirin in Malaysia A Royal Malaysian Police officer points to a map showing the search and rescue operation area for the missing 15-year-old Franco-Irish teenager Nora Quoirin in Seremban AFP/Getty Search for missing Nora Quoirin in Malaysia Members of a rescue team conducts a search and rescue operation for a missing British girl at a forest in Seremban EPA Search for missing Nora Quoirin in Malaysia A member of a rescue team conducts a search and rescue operation for a missing British girl at a forest in Seremban, Negeri Sembilan, Malaysia, Thursday, Aug. 8, 2019. Malaysian police said Wednesday they were analyzing fingerprints found in a forest resort cottage where Nora Anne Quoirin, the British teenager, was reported missing AP Search for missing Nora Quoirin in Malaysia A member of a rescue team conducts a search and rescue operation for a missing British girl at a forest in Seremban AFP/Getty Search for missing Nora Quoirin in Malaysia Royal Malaysian Chief of Police of Nilai District Mohd Nor Marzukee Besar (C) conducts a briefing before a search and rescue operation for the missing 15-year-old Franco-Irish girl Nora Quoirin in Seremban AFP/Getty Search for missing Nora Quoirin in Malaysia Members of Malaysian rescue team prepare for a search and rescue operation for the missing the 15-year-old Franco-Irish girl Nora Quoirin in Seremban AFP/Getty Search for missing Nora Quoirin in Malaysia A Police K9 unit team conducts a search and rescue operation for a missing British girl at a forest in Seremban AP Search for missing Nora Quoirin in Malaysia A member of a rescue team conducts a search and rescue operation for a missing British girl at a forest in Seremban AP Search for missing Nora Quoirin in Malaysia A member of a rescue team conducts a search and rescue operation for a missing British girl at a forest in Seremban AFP/Getty

But police are continuing to focus their enquiries around the theory she may have left the resort of her own accord and could now be stranded in a small 2.5 square mile area of the surrounding rainforest in Negeri Sembilan state.

The force has analysed fingerprints found in a resort cottage from which Nora was reported missing, despite previously saying there were no initial signs of foul play.

Speaking on Thursday, district police chief Mohamad Nor Marzukee Besar said officers would “be using a loudhailer to call her” and revealed her parents had been interviewed to “find out what voice the victim would like to hear”.

He added: “We hope that on this fifth day we will be successful in finding the missing victim.”

Some 200 officers, along with indigenous trackers, have been divided into six teams for the ongoing search.

The family's statement said: “We would like to thank our embassies, the local community, and the staff here at the hotel and anyone else who has offered help to find Nora.

“We also welcome the assistance of the French, British and Irish police.

“We are completely overwhelmed by the support we have received from all over the world.”

While the family themselves released a statement thanking authorities for the efforts, Nora’s grandfather Sylvain Quoirin suggested there were concerns the right line of investigation was not being pursued.

“In my opinion, the adventure escapade line of inquiry is not at all valid,” he told the BBC, adding the schoolgirl was “very shy, very reserved, very fearful”.

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A statement released by the Lucie Blackman Trust, a charity which helps families of those missing overseas, said: “This is extremely traumatic.”