Woman and children fire deaths in Prestatyn treated as murder
Police are treating the deaths of a woman and two young children in a flat fire in Prestatyn, Denbighshire, as murder.
A 20-year-old woman, a boy of four and a two-year-old girl - both related to her - were pronounced dead in hospital.
The 15-month-old son of the woman who died on Friday night is in a critical condition and her partner, 23, is in a serious condition in hospital.
A man, 45, and a woman, 42, living in a flat downstairs have been arrested.
Fire crews wearing breathing apparatus went into the property at Maes Y Groes at about 22:00 BST on Friday.
North Wales Police said the property had been converted into flats and the victims in the first floor flat.
The force said the two people arrested on suspicion of murder were living in the ground floor flat.
The 15-month-old baby boy is said to be in a critical condition at Alder Hey Children's Hospital in Liverpool.
He is the son of the 20-year-old woman who died in the fire and her 23-year-old partner who is receiving treatment for his injuries, which are described as serious.
A police spokesman said although related to the two children who died, the 20-year-old woman is not their mother. Her partner is not related to the two children who died.
All casualties are local to the Prestatyn area.
Det Supt John Chapman said: "We would appeal for anyone who may have seen anything suspicious in the Maes y Groes area of Prestatyn yesterday evening to get in contact as soon as possible by calling us on 101.
"We are deploying family liaison officers to work closely with the next of kin at this difficult time.
"There is a team of dedicated officers working on specific lines of inquiry in relation to this incident."
Crews from Rhyl and Prestatyn were sent to the scene.'Serious condition'
A joint investigation is being carried out between North Wales Fire and Rescue Service and North Wales Police.
A spokeswoman for Welsh Ambulance Services NHS Trust said the man and baby were taken to Glan Clwyd Hospital in Rhyl but he was later transferred to Whiston Hospital, Merseyside.
The baby was also transferred for further treatment at Alder Hey.
Two fire crews from Rhyl and a crew from Prestatyn brought the blaze under control and carried out a search for any casualties.
The street has been cordoned off.