Malaysian Police have confirmed that the body found this morning is their daughter.
Nora had been vulnerable since birth, never went out alone and had limited verbal communication skills, her family said last week.
Adding that the body "was not in any clothings".
"The family will also go to the hospital now for official confirmation on the body", he said.
The search and rescue operations also involved playing a recording of her mother's voice in the dense thickets of the resort in the hopes that Quoirin would recognize her voice.
An autopsy will be done on Wednesday morning, he added.
He said the body had not been identified. Mazlan said it was still being treated as a missing person case.
In this image from a video, rescuers conduct a search and rescue operation for a missing British girl at a forest in Seremban, Malaysia on August 12, 2019. "Both parents. the mother and father both confirmed it", he said during a press conference outside the hospital mortuary.
Earlier, Quoirin's parents Sebastian and Meabh were brought to the site of the discovery at 4.17pm.
"The forensics team has been summoned to identify the body", Negeri Sembilan Police chief Datuk Mohamad Mat Yusof told reporters here. "However it sadly seems likely", said The Lucie Blackman Trust, a charity that helps the families of Britons in crisis overseas.
Nine days after the London girl went missing, authorities say they found Nora's body just over a mile from the Dusun jungle nature resort where she disappeared August 4 during a family vacation.
"It is possible she has been seen or taken in by somebody and is unable to communicate, so we urge everyone who can to share our appeal poster and social media appeals".
Yesterday, her mother Meabh Jaseprine Quoirin, 46, offered an RM50,000 reward for any information leading to her return.
He tweeted: "Irish + French embassies in Malaysia working together to provide every assistance to the Quoirin family".
"It was found two kilometres (1.2 miles) from the Dusun Resort where she was staying".
The family journeyed together to the upscale forest resort from the airport that Saturday.