Executives at leading hedge-fund firm Elliott Management Corp. warning that the world is heading toward the worst financial crisis since World War II.

In a letter sent to investors, and reportedly seen by the Financial Times, the Florida-headquartered firm told clients that it believes the global economy is in an “extremely challenging” situation that could lead to hyperinflation.

Elliott did not respond to MarketWatch’s request for comment.

The firm, led by billionaire Paul Singer and Jonathan Pollock, told its clients that “investors should not assume they have ‘seen everything’ ” because they have been through the peaks and troughs of the 1987 crash, the dot-com boom and bust, the 2008 global financial crisis, and previous bear and bull markets.

It added that the “extraordinary” period of cheap money is coming to an end and has “made possible a set of outcomes that would be at or beyond the boundaries of the entire post-WWII period.”