Police warned people to avoid the Glasgow Cross area as Celtic fans begin to gather for celebrations.
Several roads have been shut by officers "for public safety reasons".
Pedestrians are asked to find alternative routes.
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Celtic fans began to gather at the city centre spot to celebrate that the team secured the Scottish Premiership title.
The Glasgow Times reported on Thursday that wearing celebratory T-shirts reading 'Champions Again', the Celtic squad and manager Brendan Rodgers revelled in the cheers and chants.
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