LONDON—A stabbing Monday at a children’s dance class in northwest England killed two children and wounded 11 other people, police said, and officers arrested a 17-year-old boy and seized a knife after the bloody rampage.
The teen was arrested on suspicion of murder and attempted murder in the stabbing in Southport, a seaside town near Liverpool, Merseyside Police said. The motive was not clear, but police said detectives were not treating the attack as terror-related.
