Nóra Quoirin's parents say they're devastated at their daughter's disappearance - but remain hopeful she'll be found.
The Malaysian search operation is now into its fourth day.
15-year-old Nóra, who has special needs, went missing from her bedroom at a holiday resort on Sunday.
More than 200 people along with search dogs and drones are looking through a thick forest area nearby to try and find her.
Local police have confirmed at least 20 people have now been questioned in connection with her disappearance.
Nóra's family say it's an extremely traumatic time for them.
Her parents, Maebh and Sebastien, are asking people to keep Nora in their thoughts as the search operation continues.
