Spanish authorities announced on Thursday that they have detained four individuals believed to be involved in an online hate campaign against Real Madrid player Vinicius prior to last month's match against Atletico Madrid.
The viral social media campaign before the September 29 clash encouraged Atletico fans to arrive at the club's Metropolitano stadium and utter "degrading and discriminatory insults with racist connotations" against a Real player, police said.
Participants were urged to come wearing masks to thwart attempts to identify them, police added in a statement without naming Vinicius.
The investigation began at the start of this month following three complaints by La Liga and four males suspected of inciting hatred were arrested on October 14 and 15.
Further arrests cannot be ruled out as the investigation remains open, police added.
Opposition fans have singled out Vinicius for racist abuse at several La Liga stadiums since the Brazil forward, 24, joined Real Madrid in 2018.
ALSO READ | South Africa jump to 4th position in WTC standings with victory in first Test against Bangladesh
In January 2023, a dark-skinned effigy wearing a Vinicius shirt was found hanging from a bridge near the club's training ground alongside a banner saying: "Madrid hates Real".
In December, four Atletico Madrid fans were charged over the incident, with prosecutors pushing for jail terms of four years.
Last month's Madrid derby was also marred by a 15-minute suspension after Atletico fans hurled objects including lighters onto the pitch in the second half.
The violence eventually earned Atletico a fine and a partial stadium closure. The game ended 1-1.
Disclaimer: This story has been published from a news agency feed with minimal edits to adhere to web's style guide. The headline may have been changed to better reflect the content of the story or to make it more suitable for web audience.