Aaron Davidson and Neill McFerron, both 18, are believed to have been killed by inhaling the fumes in the luxury flat.

Tragic: Aaron Davidson pictured with his one-year-old nephew Ben. The teenager died with friend Neill McFerron from suspected carbon monoxide poisoning in a holiday apartment
The teenagers were on a trip to the seaside resort of Castlerock in Co Londonderry, Northern Ireland, and were believed to be celebrating the end of their A Levels.

Holiday: Neil McFerron was to get his A Level results later this month
The alarm was raised by one of the schoolboys who managed to phone a relative who alerted police, fire and ambulance crews to the scene.
John McPoland of the Northern Ireland Ambulance Service said: 'This is an absolute tragedy for the families involved.
'Despite resuscitation attempts, crews were unable to revive the two young men.'
The victims were from the Ballyclare area north of Belfast
The boy who survived last night's tragedy is in a stable condition at the Causeway Hospital in Coleraine.
He is expected to make a full recovery.
A post mortem examination of both teenagers' bodies was expected to take place shortly and a n inquest will be opened and adjourned in due course.
Separate police and health and safety investigations into the tragedy were launched today.