A Hungarian-based website is offering fake tickets to T In The Park 2009, organisers have said.
Tinthepark2009.com is currently selling day and weekend tickets to the festival, despite organisers confirming that it has been given no ticket allocation.
A spokesperson told BBC News that DF Concerts, which promotes T In The Park, will be taking legal action against the Hungarian website.
She said: “This site is 100 per cent unofficial and has not been given an allocation of festival tickets to sell. The event is taking legal action and urges T In The Parkers to under no circumstances buy tickets from this outlet.”
Organisers also revealed that councillors are due to hold a vote to decide whether to increase the capacity of T In The Park 2009 by 5,000, taking the total capacity to 85,000.