So says a story, here:
According to the calendar of then New York Fed President, Timothy Geithner, who is now U.S. Treasury Secretary, it even held a "Fixing LIBOR" meeting between 2:30-3:00 pm on April 28, 2008. At least eight senior Fed staffers were invited. ...
Darrell Duffie, a Stanford University finance professor who has followed the Libor issue for several years, said that he believed regulators were "on the case reasonably quickly" after questions were raised in 2008.
"It appears that some regulators, at least at the New York Fed, indeed knew there was a problem at that time. New York Fed staff have subsequently presented some very good research on the likely level of distortions in Libor reporting," Duffie said. "I am surprised, however, that the various regulators in the U.S. and UK took this long to identify and act on the misbehavior."
