Fans are to be searched ahead of the Scottish Premiership clash between Aberdeen and Rangers.
Extra security has been brought in to deal with the potential crowd trouble in Aberdeen on Sunday.
It follows a spate of incidents at Pittodrie in previous fixtures involving the two sides.
A Police Scotland spokesman said: "Extra police resources are being deployed across Aberdeen today ahead of, during and after this afternoon's match between Aberdeen and Rangers at Pittodrie.
"We're already seeing increased traffic on approaches to the stadium so if you're heading to the match please give yourself extra time to get parked and make your way into the ground.
"A large scale security operation is in place both in and around Pittodrie Stadium and fans should expect to be searched on their way in, which will also add to the time it takes to you seat ahead of kick-off."