A 31-year-old man has been arrested on suspicion of double murder after two young girls were killed in a devastating flat fire.br Emergency services rushed to the scene when a blaze ripped through the property in Fairisle Close, Clifton, Nottingham, at 3.17am on Sunday (2011).br Two children, aged one and three, were taken to the city's Queen's Medical Centre along with a woman, believed to be their mother.br Tragically, the two youngsters were pronounced dead at hospital while the woman remains fighting for her life in a critical condition.