U.S probes hedge fund manager Ribotsky

U.S. criminal authorities are probing whether Corey Ribotsky, Managing Member of NIR Group, a Roslyn, New York hedge-fund, defrauded investors about their returns and the holdings of his various funds, the Wall Street Journal reported, citing people familiar with the matter.

The people told the paper that prosecutors from the U.S. Securities and Exchange Commission, Federal Bureau of Investigation and the U.S. attorney's office in Brooklyn are looking at whether Ribotsky lied to investors as stock prices fell during the credit crisis.