Investigators fear the fraudsters behind the bogus websites have already conned supporters out of millions of pounds
UEFA Investigators have found at least 30 claiming to have tickets for top matches.
They fear supporters have been conned out of millions of pounds by shadowy fraudsters operating the sites.
One London-based site, 2016EuroEvents.com, is offering tickets for the England v Wales clash in Lens for £700.
But an investigation by ITV News London revealed there is no way of contacting the firm once payment is made.
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Kevin Miles, from the Football Supporters’ Federation, said better enforcement is needed to protect fans.
“Many of these fraudsters that are praying on people, the same names crop up, tournament after tournament, year after year.”
Det Chief Insp Andy Fyfe, from the City of London Police, said it was difficult to bring the conmen to justice.
“The difficulty is that you’re often dealing with overseas web registrars,” he said.
“There’s no law that says just because police make a request for a website to be taken down, that it needs to take that service down.
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“We don’t have any particular police power to enforce that that website is suspended on our behalf.”