RFC Seraing and RWD Molenbeek fans clashed on the pitch at the Pairay stadium after the second leg of their Belgian first division promotion/relegation play-off final on Saturday.
The match finished in a 0-0 draw. RFC Seraing won 1-0 on aggregate and retained their place in the top flight.
After the full-time whistle was blown, jubilant Seraing supporters went onto the pitch to celebrate the team’s success.
Dozens of RWDM fans also entered the pitch and scuffles broke out between rival supporters.