An affidavit in the federal investigation into a prostitution ring said that a wiretap recording captured a man identified as Client 9 on a telephone call confirming plans to have a woman travel from New York to Washington, where he had reserved a hotel room. The person briefed on the case identified Mr. Spitzer as Client 9.
More, from the New York Times:
The man described as Client 9 in court papers arranged to meet with a prostitute who was part of the ring, Emperors Club VIP, on the night of Feb. 13. Mr. Spitzer traveled to Washington that evening, according to a person told of his travel arrangements.
The affidavit says that Client 9 met with the woman in hotel room 871 but does not identify the hotel. Mr. Spitzer stayed at the Mayflower Hotel in Washington on Feb. 13, according to a source who was told of his travel arrangements. Room 871 at the Mayflower Hotel that evening was registered under another name.