Some 300 Malaysian searchers aided by drones and sniffer dogs are scouring the forest area near the resort, playing recordings of Nora's mother calling out to her.
A £10,000 reward has been offered to help find a vulnerable teenager who disappeared from her bedroom at a nature resort on August 4.
The teenager's family announced that the reward of 50,000 Malaysian ringgit had been donated by an anonymous Belfast-based business.
He said police from Ireland, France and the United Kingdom arrived a few days ago to assist in the investigation but declined to give further details.
Meanwhile, Negri Sembilan deputy police chief SAC Che Zakaria Othman in a press conference this evening said that there are officers from England, France and Ireland who are now here.
In a statement released by the Lucie Blackman Trust, which supports Britons overseas, her family said: "All her life, she has spent a lot of time in hospital.
We are committed to finding her", he told reporters. They said she isn't independent, has difficulty walking, and has never wandered off on her own.
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Nora Anne and her family arrived at the Negri Sembilan resort on Aug 3 for a two-week holiday.
On Monday, a handful of traditional shamans - known locally as "bomoh" - appeared to go into a trance in the jungle as they conducted rituals to help locate her.
Nora had been on a family holiday at a resort near Seremban, around an hour south of capital Kuala Lumpur. We know that you are searching night and day for Nora. Nora likes to walk with her family but her balance is limited and she struggles with co-ordination.
Posters of Nora flashed on giant screens before and during the concert before band member Nicky Byrne pleaded with the 7,000-strong crowd to keep find her.
Nora was born with a small brain caused by Patau's syndrome, limiting her speech, movement and coordination.
With her husband Sebastien by her side, she ended by saying "terima kasih" - which means thank you in the Malay language.
Police have questioned a number of people, are examining fingerprints found on a window, and looking into reports that villagers heard a truck early on the morning that the girl disappeared.
Day Nine of the search-and-rescue mission today involved 353 personnel.
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