pbr A mother and daughter have been found stabbed to death in east London.br ppbr Police discovered a woman, believed to be in her forties, in Stansfield Road, Beckton.br ppbr She had been attacked in the street by a knifeman and identity documents led officers to her family home in nearby Leamouth Road.br ppbr They found the property was on fire and a second woman was found in a ground floor room with stab wounds. She is thought to be in her late sixties or early seventies and died at the scene.br ppbr The fire was extinguished and police then found a man in the loft of the property with serious knife wounds.br ppbr The man, aged in his forties, was taken to an east London hospital. He has been arrested on suspicion of murder. His injuries are not life threatening.