Former Credit Suisse Group AG broker Eric Butler was convicted Monday of fraudulently selling millions of dollars in subprime securities to corporate clients.

Butler was found guilty on all three counts after two hours of jury deliberations. Testimony in his trial began July 23 before U.S. District Judge Jack B. Weinstein in Brooklyn, N.Y. Co-defendant Julian Tzolov, who fled securities-fraud charges and was returned to New York from Spain on July 20, pleaded guilty to conspiracy, wire fraud and securities fraud July 22. He testified as a prosecution witness.

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