The government accused Stewart Parnell of knowingly marketing tainted food . He and his brother were found guilty Friday on federal conspiracy charges . Hide Caption Parnell 's indictment became a landmark case in food safety in America .
The government accused Stewart Parnell of knowingly marketing tainted food . He and his brother were found guilty Friday on federal conspiracy charges . A deadly salmonella outbreak was traced to peanut butter made by Parnell 's company . Parnell 's indictment became a landmark case in food safety in America .