Below is extract from message sent to Northern Ireland fans traveling to Scotland for international friendly football game.
"Hi All
Just a couple of things before we all head off to bonnie Scotland.
We've been advised by the SFA that some Celtic fans plan to cause some trouble in and around the Hampden area on Wednesday, i would urge you to tell anyone travelling with you not to rise to this bait.
It's unfortunate that these people may attempt to tarnish the wonderful image we as an Amalgamation have all over the world because don't forget that if any of our fans should get involved in any of this type of nonsense then who do you think will get it in the neck from the press."