Fans attending Tuesday evening's Edinburgh Derby are being urged to arrive at Easter Road early.
Police say they will have "specialist" resources in and around the ground before and during the match.
Edinburgh Police Division say officers will be assisting stewards on the night, and are reminding people not to arrive with banned items such as flares, fireworks or smoke devices.
Chief inspector David Happs said: "We want both sets of fans to enjoy the game safely and in the proper spirit. It is essential that supporters act in a responsible manner and do not put themselves or others at risk.
"As such any flare, firework or any controlled container or bottle which could cause harm if thrown, is strictly forbidden from the ground. Items such as flares or smoke devices are dangerous and can endanger your own and others’ safety.
"It is illegal to enter or even attempt to enter the stadium with them so if you are found to be in possession of any prohibited items you are likely to be arrested, face prosecution and a football banning order.
"Criminality will not be tolerated and we will work with both football clubs to identify any person involved.
"There will be a high visibility police presence at the turnstiles to support the steward search operation of those persons entering the stadium."
Chief inspector Happs added: "Anyone trying to get into the stadium whilst drunk will not see the game and may also face arrest and prosecution.
"Turnstiles open at 6.45pm and I would encourage spectators to arrive early at the stadium. Enjoy the game and please check the club websites for further details about stadium access and the ground rules."
