A secretive group of Wall Street hedge fund bosses are said to be behind a plot to cash in on the decline of the euro.

Representatives of George Soros's investment business were among an all-star line up of Wall Street investors at an 'ideas dinner' at a private townhouse in Manhattan, according to reports.

A spokesman for Soros Fund Management said the legendary investor did not attend the dinner on February 8, but did not deny that his firm was represented.

At the dinner, the speculators are said to have argued that the euro is likely to plunge in value to parity with the dollar.

The single currency has been under enormous pressure because of Greece's debt crisis, plus financial worries in Portugal, Italy, Spain and Ireland.

But, it has also struggled because hedge funds have been placing huge bets on the currency's decline, which could make the speculators hundreds of millions of pounds.

The euro traded at $1.51 in December, but has since fallen to $1.34. Details of the secretive dinner emerged days after Mr Soros, chairman of Soros

Fund Management, warned in a newspaper article that the euro could 'fall apart' even if the European Union can agree a deal to shore up support for stricken Greece.