French police have detained a suspect in the hit-and-run death of a teenage boy during celebrations of France’s win over Morocco in the World Cup semifinals, prosecutors said on Tuesday. A man was detained on Tuesday near the southern city of Perpignan, prosecutors said. The 14-year-old boy, Aymen, was killed on December 15 in the Paillade district, one of the poorer areas of the southern city of Montpellier. Video on social media showed a white hatchback surrounded by fans which speeds away when someone tears down a flag hanging out of its rear window. Le conducteur qui a mortellement fauché …