Federal prosecutors probing the collapse of

Lehman Brothers

have subpoenaed other securities firms, seeking information about whether their analysts were misled by Lehman about its financial health, the

Wall Street Journal

reports.

The subpoenas request information about statements Lehman made earlier this year as its stock was tumbling and questions about its strength were mounting. At least three U.S. attorneys offices are investigating Lehman's collapse, including the Southern District of New York, the newspaper reports. At least a dozen current and former Lehman executives also have been subpoenaed, including CEO Richard Fuld Jr.

Lehman filed for bankruptcy on Sept. 15, and its U.S. operations were sold to

Barclays

(BCS) - Get Report

.

The probes are at an early stage and their scope includes whether Lehman valued its assets at artificially high levels, improperly moved $8 billion from its London operations to New York just ahead of its bankruptcy filing and misled New Jersey's pension fund when it provided information about its financial health in connection with a June stock offering, the

Journal

reports, citing people familiar with the situation.

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This article was written by a staff member of TheStreet.com.