As Atletico Madrid fans gathered at the Neptune Fountain to celebrate their 11th La Liga title on Saturday, celebrations turned ugly as a 14-year-old Atletico supporter died.
The incident happened as the teenager was in a van with friends and is believed to have suffered a brain injury after hitting his head against the wall of an underground car park.
At the time of the accident, more than 2,000 Atletico supporters were celebrating as their side a seven-year dominance by Barcelona and Real Madrid in Spain.