four o clock that morning. the three people were taken to the queen s medical centre in nottingham. both children died at the hospital and the woman remains in critical condition. the fire was started deliberately and nottinghamshire police are now appealing for witnesses. what more have police said? the investigation was launched later today. detective chief inspector greg magill, who is leading the investigation, said the circumstances were tragic and very sad and his thoughts with the family of those involved. detectives are working hard and will be in the local area. there will be a large police