Tributes were paid today to a detective constable who died in a house fire along with her two young sons.
The bodies of Heather Bickley, 46, six-year-old Oscar, and Felix, 10, were recovered from their home in Anglesey following the blaze early this morning.
North Wales Police, for which Mrs Bickley worked, was investigating the cause with the fire service.
Officers are keeping an open mind but sources said the blaze did not appear to be suspicious.
Mrs Bickley's husband John, who was being comforted today by family and friends, was not in the house at the time.
Police have not confirmed reports that he arrived at the scene shortly after the fire brigade and was injured when he attempted to get inside and rescue his family.
Emergency crews were called to the property by neighbours in Tyn-y-Gongl, near Marianglas, at around 12.50am.
Firefighters arrived to find the dorma bungalow well alight.
Two sets of breathing apparatus, two hosereel jets and a main jet were used to extinguish the fire.
Oscar's body was recovered shortly afterwards but his mother and brother's remains could not be removed until the house had been made structurally safe.
It is understood the blaze was so severe that the roof collapsed in on itself.
In a tribute from her force, Chief Superintendent Mark Jones said Mrs Bickley was a ``trusted, respected and experienced'' officer who had served with the police since 1994.
She had worked in Bangor, Holyhead and Almwych but, since 2000, had been involved in child protection with the force's public protection unit (PPU).
He said: ``During her time with the PPU, Heather was an integral part of a dedicated team responsible for safeguarding children - a role she assumed with passion.
``Our thoughts are with her husband John and her family at this sad time.
``She and her children will be sorely missed by her friends, colleagues and members of the local community.''
A force spokeswoman said: ``The joint investigation between police officers and fire service personnel, supported by the forensic science service at the scene in Tyn-y-Gongl, Anglesey, is ongoing.
``We can confirm that the investigating team have located two further bodies within the severely fire-damaged house.
``Those bodies appear to be of an adult and a child.
``North Wales Police can confirm that the house belongs to a serving North Wales Police officer and the 46-year-old woman who was one of two people unaccounted for is believed to be Detective Constable Heather Bickley.
``It is feared that the two children who died with her are her two sons aged 10 and six.
``The investigation into the cause of the fire continues.
``Heather's husband John is being supported by friends and family and a police specialist family liaison officer.''
The children were later named as Felix, 10, and six-year-old Oscar.
Police have not ruled out suspicious circumstances and are keeping an open mind, although sources said arson was ``unlikely''.
In a tribute from her force, Chief Superintendent Mark Jones said Mrs Bickley was a ``trusted, respected and experienced'' officer who had served with the police since 1994.
She had worked in Bangor, Holyhead and Almwych but, since 2000, was involved in child protection with the force's public protection unit (PPU).
He said: ``Heather was a trusted, respected and experienced officer who was held in high regard by all who worked with her.
``During her time with the PPU, Heather was an integral part of a dedicated team responsible for safeguarding children - a role she assumed with passion.
``Our thoughts are with her husband John and her family at this sad time.
``She and her children will be sorely missed by her friends, colleagues and members of the local community.''
Emergency crews were called to the property in Tyn-y-Gongl, near Marianglas, at around 12.50am.
Firefighters arrived to find the property well alight.
Two sets of breathing apparatus, two hosereel jets and a main jet were used to extinguish the fire.
Police have not confirmed reports that Mr Bickley arrived at the house just after the fire brigade and was injured when he attempted to get inside and rescue his family.
It is understood the blaze was so severe that the roof of the house collapsed in on itself.
Scaffold workers have begun the process of stabilising the walls as forensic officers arrived at the dormer bungalow, set in idyllic countryside, where the family moved last year.
