Executives at two of Atlanta’s largest corporations that donated funds for charitable causes promoted by former state legislator Tyrone Brooks have written letters to a federal judge saying that Brooks violated their trust when he misappropriated hundreds of thousands of dollars for his personal use.

Allen Yee, senior counsel at the Coca-Cola Co., and Curley Dossman Jr., vice president of community affairs at Georgia-Pacific, sent the letters to U.S. District Judge Amy Totenberg. She is scheduled to sentence Brooks, a longtime civil rights activist, on Monday. Federal prosecutors have asked Totenberg to sentence the 70-year-old Brooks to a two-year prison term. Brooks’ attorneys are asking that his sentence be limited to probation.