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.

Brooks was indicted in May 2013 on 30 counts of mail, wire and tax fraud. In April 2015 he pleaded guilty to filing a false tax return and pleaded no contest to fraud charges stemming from allegations that he misappropriated hundreds of thousands of dollars in corporate charitable funds. Those funds were donated to Universal Humanities, a charity he founded that was intended to promote literacy, and to the Georgia Association of Black Elected Officials (GABEO), of which he was the longtime head. Upon his plea, Brooks also resigned from the seat in the Georgia General Assembly that he had held for 35 years.