Vincent Kompany said he was “disgusted” after being racially abused during Anderlecht's 2-2 draw with Club Brugge on Sunday.
The former Manchester City captain, now manager of Anderlecht, stated after the game that players and coaches were verbally abused throughout.
"I go home disgusted and disappointed. My players, my staff and I were victims of racist insults," the 35-year-old told broadcaster Eleven Sports.
"I want to get together with my staff, to be with the people who matter to me. We should not still have to experience this today."
Club Brugge, who were in the same Champions League group as Manchester City this season, released a statement after the game condemning the actions of their fans, saying: "Club Brugge, its fans, staff, players and board, strongly condemn any form of racism.
"These individuals are not representative of the values and norms of our club, and do not have their place at Jan Breydel Stadium."
On Monday, Club Brugge said the club would do all they can to identify those responsible and seek to impose stadium bans.
Kompany won two Belgian league titles as a player at Anderlecht before going on to win four Premier League titles with City, as well as two FA Cups and four EFL Cups during his time at the Etihad Stadium, before heading back to Anderlecht as player-coach in 2019. He retired from playing in 2020 to focus on managerial duties.
Chelsea striker Romelu Lukaku posted support for his former Belgium team-mate on Instagram, and demanded a firm response from the football authorities.
"An icon like Vincent Kompany has been insulted because of his skin colour," Lukaku wrote. "Enough is enough ... take real action now."F