An Atletico Madrid fan threw an umbrella at Lionel Messi after he scored the decisive goal in Barcelona's 1-0 win against them on Sunday.
Per Sport, some Atleti fans reacted particularly badly to Messi's 86th-minute winner and threw objects on to the pitch, among them an umbrella, according to referee Mateu Lahoz's post-game report.
Lahoz, who had to pick up all the objects on the turf at the Wanda Metropolitano Stadium, wrote: "Various objects were thrown, without hitting any player, highlighting a black umbrella."
This article will be updated to provide more information on this story as it becomes available.