[cnn-photo-caption image= http://i.l.cnn.net/cnn/2008/POLITICS/03/11/spitzer.money/art.spitzer.ag.gi.jpg caption=" As New York attorney general, Eliot Spitzer, seen in 2004, was known for tackling corruption."]WASHINGTON (CNN) - The allegations bearing down on New York's governor didn't start with a prostitute - despite lurid details in a federal affidavit detailing an alleged tryst with a "very pretty brunette" named Kristen last month.
Rather, sources familiar with the investigation said Tuesday that Gov. Eliot Spitzer's troubles began with a federal money-laundering probe.
Prosecutors unsealed an affidavit that details a rendezvous in a Washington hotel room between a prostitute and "Client 9," who a source with knowledge of the case said Monday was Spitzer.
Related: New York Congressman Peter King urges Spitzer to take responsibility for his actions