Brooklyn federal prosecutors have further charged a former Baker & McKenzie partner, indicted last fall on securities fraud charges, with stealing from a client escrow account.

Martin E. Weisberg, 57, then a corporate partner in Chicago-based Baker & McKenzie’s New York office, was charged in October by the Eastern District U.S. Attorney’s Office with participating in an illegal short-selling scheme that netted two Israeli investors $55 million. The counts in the indictment include securities fraud, conspiracy and money laundering.