Emergency services announced that a 14-year-old supporter of Atletico Madrid died after hitting his head against a wall after he had extended his body out of a moving truck in downtown Madrid on Saturday. A source from the emergency services in Madrid stated that the boy suffered a heart attack, and despite efforts to revive him, he was pronounced dead an hour after the incident at 9:20 PM local time. The boy was traveling with family and friends at the time of the accident. Madrid police are investigating the incident. Thousands of Atletico Madrid fans celebrated in the city center after the club won the La Liga title for the first time since 2014, while police increased their presence and used drones to monitor the situation.