SHOCKING: 2 Children Dead, 9 Injured in Mass Stabbing at UK Taylor Swift-Themed Event. “A 17-year-old male from Banks in Lancashire, who is originally from Cardiff, has been arrested on suspicion of murder and attempted murder and has been taken to a police station where he will be interviewed by detectives.”

Update: There seems to be some confusion about whether the suspect, Ali Al-Shakati, was an immigrant or not.