Irish rock band U2 have warned fans that concert tickets currently being advertised for sale are not real, as they have not confirmed any live shows.
The group said reports claiming they are performing soon were "mistaken".
"There are no tour dates for the band at the moment, so please don't buy tickets for U2 shows you see advertised," they said in a statement.
The group added that any future concert announcements will be made first on their official website.
Last year they denied reports that claimed they were planning a series of concerts at the O2 arena in London.
The band have been working on new material since 2006, with producers including Rick Rubin, Daniel Lanois and Brian Eno.
A new album is expected later this year, and many online agencies are advising fans to pre-register for a predicted world tour in 2009.
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