The class action alleges that attorney Thomas V. Sjoblom, while he worked at New York-based Chadbourne & Parke and later at New York’s Proskauer Rose, participated in $7 billion investment fraud orchestrated by the Texas company.

The National Law Journal has learned that Sjoblom, who joined Proskauer Rose in 2006, has withdrawn from the firm since the class action was filed. Sjoblom’s withdrawal follows a guilty plea in August by former Stanford Chief Financial Officer James Davis, which appeared to implicate Sjoblom in a conspiracy to thwart a U.S. Securities and Exchange Commission investigation into the alleged fraud.