Slovan Bratislava fans appear to have clashed with Celtic supporters and police en route to Parkhead tonight.
Fans of the Slovakian team were marched from Glasgow city centre to the stadium in the east end by a hefty police presence.
On their way, it appears that a handful of fans were involved in an altercation with Hoops supporters in the beer garden of a pub, as officers desperately tried to stop any trouble and defuse tensions.
Footage widely shared on social media appears to show some of the travelling support breaking free from the police barrier outside McChuills on Saltmarket High Street.
One fan dressed in blue appeared to gain entry to the beer garden housed with Celtic fans by evading the police, and then jumping over a wall.
A Union Jack flag could be seen in the crowd of hundreds of Slovan fans.
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The Scottish Premiership champions are in Champions League action against Slovan tonight, with kick-off at 8pm.
Police Scotland have been contacted for comment.
More to follow.