The Europa League Group I clash between Slovan Bratislava and Sparta Prague has been suspended due to crowd trouble.
Around 40 minutes into the second half of the match in Slovakia, police were reportedly forced to intervene when rival supporters began to fight with one another.
The violence occurred in the stands of the stadium, which forced the referee to suspend the action between the two clubs with the scoreline goalless.
European matches have been marred by off-the-pitch incidents in recent weeks, an example of which was the Euro 2016 qualifier between Serbia and Albania, which was abandoned after a drone carrying an Albanian flag flew onto the pitch.
