A missing 15-year-old girl from London is believed to have been abducted in Malaysia.
Nora Quoirin, who has learning difficulties, had been on a family holiday at a resort near Seremban when she disappeared.
The teenager's parents reportedly discovered she was not in her room on Sunday morning and that the window was open.
She was initially said to be missing, however police now think she was abducted.
The Lucie Blackman Trust, which helps the families of missing people, said: "The Lucie Blackman Trust has been informed that Malaysian police are now treating the disappearance of 15-year-old Nora Quoirin as an abduction. Her family are with police now."
Have you been affected by this story? Email webnews@mirror.co.uk.
Speaking from Belfast, Nora's aunt Aisling Agnew said: "Nora's parents and relatives in Ireland and France are distraught by her disappearance.
"Nora is a child with special needs and has learning and developmental disabilities which make her especially vulnerable and we fear for her safety.
"Nora would not know how to get help and would never leave her family voluntarily.
"We now consider this a criminal matter.
"We are appealing to everyone to assist the local police in any way they can and to pass on any information that would help locate our beloved Nora without delay."
Nora, whose mother Meabh is originally from Belfast and whose father is French, is understood to have been travelling on an Irish passport.
The family are said to have been living in London for a number of years.
Family friend Catherine Cook previously told PA: "It's out of character for Nora to go wandering off.
"I'm a mother and I burst into tears just hearing this story. I cannot imagine the hell that they are living right now. I just ask for anyone who can help them to do so as soon as possible.
"To my knowledge the French government and the Irish government are helping them and it would be great if other agencies or governments worldwide could support them."
The BBC reported that Malaysian police are using sniffer dogs in their search for Nora.
The family has set up an email address where information can be passed on at findnoraq@gmail.com.
The LBT has also provided a hotline and email address for information. People can remain anonymous and can call +448000988485 or email ops@lbtrust.org.
