Belgium's Euro 2024 qualifier against Sweden was abandoned at half-time and fans were kept in the stadium for security reasons after two Swedes were shot dead in an attack in Brussels on Monday.
Spectators at the King Baudouin stadium in the Belgian capital were told to remain inside the ground following an announcement that the players would not return for the second half.
"Following a suspected terrorist attack in Brussels this evening, it has been decided after consultation with the two teams and the local police authorities, that the UEFA EURO 2024 qualifying match between Belgium and Sweden is abandoned," UEFA said on its website.
Two Swedish nationals were shot dead by a suspect who remains at large, in an attack the Belgian prime minister described as "terrorism".
Manchester United centre-back Victor Lindelof, who plays for the Swedish national team, admitted to being "shocked and devastated" by Monday's incident in an Instagram post.
"I’m shocked and devastated by the terrible incidents in Brussels with the cold-hearted attacks on our fellow Swedes. I’m lost for words for the cruelty and inhumanity, I want to send my deepest condolences to the families and friends of those affected," he wrote.
"At the same time, my thoughts go out to all the supporters in Belgium last night, no one should ever go to a game of football and feel unsafe when supporting their team," he added.