Negri Sembilan police chief Datuk Mohamad Mat Yusof told the press on Thursday that the police would be deploying a helicopter equipped with thermal imaging cameras to try and detect the Irish teen, who was reported missing from a holiday resort in Pantai Hills on Sunday.
He added that police have already made voice recordings of Nora Anne Quoirin's mother and family members which would be played using loud hailers while combing the forest surrounding the resort.