The Scottish Football Association has hit out at the "disgraceful" booing of the Liechtenstein national anthem.
A section of Scotland fans jeered the anthem - which has the same tune as God Save The Queen - before their side's 2-1 victory in the Euro 2012 qualifier.
SFA acting chief executive George Peat said he was "embarrassed" by the booing at Hampden on Tuesday.
"I apologise unreservedly to our visitors for the crass reaction to their anthem," said Peat.
Peat said those who chose to boo the anthem ran the risk of damaging the reputation of the Tartan Army.
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"The Scotland fans have worked hard to earn their reputation throughout the world as fun-loving and respectful followers of football," he added.
"Last night, those who chose to boo our opponents' anthem only served to tarnish that reputation."
Peat revealed that he apologised in private to the Liechtenstein delegation following the booing.
"It must not be forgotten that all nations must abide by Fifa's Fair Play policy and last night's behaviour does nothing to help Scotland's image," he added.
Scotland's victory, coupled with Lithuania's 1-0 win away to the Czech Republic, sees the Scots top Group I with four points from their opening two games.
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