Three children who were found dead in their home after emergency services were called out to reports of an explosion have been named.
Twin boys Augustino and Gianluca Riggi, eight, and Cecilia Riggi, five, were discovered at a flat in Edinburgh. Their deaths are being treated as suspicious.
Emergency services were called to the flat in Slateford Road on Wednesday afternoon - but police later said there was no fault with the gas supply. A small fire was also extinguished by fire and rescue crews.
Lothian and Borders Police are waiting to speak to mother Theresa Riggi, who is receiving treatment at Edinburgh Royal Infirmary.
Mrs Riggi and her children had been reported missing from their home in Skene, Aberdeenshire, last month but were later found safe and well in Edinburgh. The children's father has been interviewed by police but is not said to be a suspect.
Officers said they had launched a criminal inquiry. They did not deny reports that the children may have died before the reported explosion.
Neighbours at the modern residential block had reported smelling gas in the early hours. They also said a woman, who was new to the building, fell from a balcony.
Detective Superintendent Alan Jones, of Lothian and Borders Police, told BBC Radio Scotland that officers wanted to speak to Mrs Riggi as soon as possible.
He said: "She's not in a position to speak to us at the moment. She's stable at present, but we will take advice from clinicians and obviously take account of the investigation as it progresses."
The detective said police broke the "tragic news" to the children's father, Pasquale Riggi, 46, on Wednesday. He added: "He's with us at the moment, helping us with our inquiries and providing us with some invaluable detail about the background of the family."