On May 29, 1985, 39 people went to the biggest club game in soccer and never returned home.
Heysel Stadium in Brussels was staging the European Cup final between Juventus and Liverpool exactly 40 years ago.
Crowd disorder culminated in a surge by Liverpool fans into an adjacent stand containing mostly Juventus supporters. In the ensuing chaos, some were trampled or suffocated to death as they tried to flee and others died when a retaining wall collapsed.
A total of 39 people - 32 from Italy, four from Belgium, two from France and one from Northern Ireland - died and around 600 were injured in events that took place in real time on international television.
On the 40th anniversary of the Heysel disaster, here's a look at what exactly happened and the consequences of one of soccer's darkest days.