A 14-year-old boy has been killed and four others have been injured by a man wielding a sword who attacked members of the public and police officers in a northeast London suburb. Police said that a 36-year-old man was arrested at the scene on suspicion of murder. Chief Supt. Stuart Bell said the violence wasn't being treated as terror-related or a “targeted attack.” Two police officers were hospitalized for stab wounds. Two other people were also injured. The Metropolitan Police said they were called early Tuesday to reports of a vehicle being driven into a house and people being stabbed close to the Hainault subway station.