Police have named a 15-year-old girl who was killed in an east London fire as Tiffany Regis. Tiffany died in the blaze on Thursday at a block of flats in Beckton, the Metropolitan police said. Detectives are treating the fire as arson. While identification was not conclusive, police said they believed Tiffany died in the fire. A postmortem found that the cause of death was smoke inhalation. A 16-year-old boy was arrested on Thursday on suspicion of murder. He was later bailed pending further inquiries. Five others at the address were injured. They have since been discharged from hospital. Ch Sup Simon Crick, who leads the Met’s north east command unit, said his thoughts were with Tiffany and her family and friends, adding: “Incidents such as these send shock waves through our communities and I don’t underestimate the impact this will have in the local area and beyond. “Officers will be on patrol in the immediate vicinity over the Easter Weekend, please talk to them if you have any concerns.” The mayor of Newham, Rokhsana Fiaz, said: “Tiffany’s parents are going through unimaginable pain at the loss of their much loved 15-year-old daughter who brought so much joy. I am deeply upset by this tragic loss of a young life, as is everyone in Newham. “My thoughts and prayers are with Tiffany’s parents, family and friends at this very difficult and heart-breaking time. I am urging anyone with any information to contact the police incident room. “Our priority is to support Tiffany’s parents grieving the loss of their child; and all those young people who have lost a dear friend.”