Police are treating the deaths of three children in a suspected explosion at a flat in Edinburgh as suspicious.
The children - two boys and one girl - who are all of primary school age died on Wednesday at three-storey townhouse in Slateford Road in the Craiglockhart area of the city.
A police source was unable to confirm reports the children had died before the blast but said efforts to track down their father are continuing.
One neighbour described how the mother, who is in her 40s, was seen screaming on the balcony of the house before jumping from the third floor.
He told STV News: "I was sitting in my living room. I heard screaming. It was really bad big screaming, the sort of screaming you would only do if a death or something very very bad had happened.
"I live on the left of them, we share a wall with them. I went outside and I saw her on the first floor balcony. I went in to the house and there was a smell of gas. A handyman who was with me went upstairs and I went outside."
He added: "When the handyman came back out he was crying. I don't know what he saw - I don't want to know. I came back out and she was standing on the second floor balcony.
"She was standing on the third floor balcony. She was holding her arms, like she was already injured. She was crying and screaming. There was about five of us standing saying to 'don't do it, don't jump'.
"Then she jumped off. My neighbour tried to catch her and she kind of landed on his arms. She was lying on the floor and I left the scene, it was just too much.
"I don't think she was jumping to save herself. If she was she would have jumped from the first floor balcony."
Police, ambulance and fire crews were called to the building, which is about two years old, at around 3pm on Wednesday.
A Lothian and Borders Police spokesman said: "A criminal investigation is currently under way and nothing more can be said at this time into the circumstances which led to their deaths."
Police said no details of the identity of the children will be issued until after post-mortems have been carried out but confirmed the mother is still being treated at Edinburgh Royal Infirmary. She was found on the grounds of the property.
Emergency services responded to an initial report of a gas explosion at the residential property in Slateford Road.
Although the gas supply was isolated it has since been revealed there was no fault with the gas supply to the building.
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Additional reporting by Jennifer Crichton