Two days after announcing the creation of a multi-state task force focused on possible securities law violations at Wall Street investment firms, New York Attorney General Eliot Spitzer has reportedly subpoenaed documents from Salomon Smith Barney.

According to The New York Times, Spitzer requested the firm produce all documents related to the research of Jack Grubman, the firm's lead telecommunications analyst. The Times reported that the request covers communications between Grubman's research team and Salomon's investment banking group, as well as material about how Grubman's group was compensated.

Spitzer has also reportedly requested documents related to 54 telecommunications companies and dating back to January 1998. The probe may uncover if Salomon advised firms like Global Crossing and Qwest on transactions that have led to U.S. Securities and Exchange Commission (SEC) investigations.

Grubman recommended many telecommunications stocks in the late 90s, and continued to recommend them well into 2000 after their values had dropped through the floor. At the same time, Salomon Smith Barney was doing a healthy business issuing telecommunications securities. Salomon was Wall Street's leader in generating fees by underwriting telecommunications securities.

The move expands Spitzer's inquiry into Wall Street firms. On Tuesday, his office, together with the North American Securities Administrators Association (NASAA), unveiled a multi-state task force -- co-chaired by New York, New Jersey and California -- to investigate possible securities violations at Wall Street investment firms. On Wednesday he was in the nation's capitol, urging Congressional action against conflicts of interest on Wall Street. And earlier in the month, Spitzer obtained a court order requiring injunctive relief against Merrill Lynch as a result of the state's investigation into the firm's investment advice. Spitzer's office said its investigation showed research analysts were making private disparaging remarks about companies while publicly recommending their stocks.