Agriprocessors faced several accusations of mistreatment of cattle between 2004 and 2008. The company was fined $600,000 for violating waste-water regulations in 2006, and $9.99 million in October 2008 for various violations of state labor law, including illegally deducting money from employees for safety equipment and failing to pay employees. When the U.S. Immigration and Customs Enforcement (ICE) staged a raid at the Postville plant in May 2008, during which nearly 400 illegal immigrant workers were arrested, Rubashkin said that he "had no idea that his workers were illegal". In September 2008, he, his son Sholom Rubashkin, as well as the company's human resources manager and two office employees, were charged for state child labor violations. He was never charged federally, and the state child labor charges against him were dropped in May 2010. His son was acquitted in state court of knowingly hiring underage workers at the plant in June 2010. However, Agriprocessors, as a corporation, entered a guilty plea to 83 child labor charges, with the footnote that the conviction wasn't based on the knowledge or intent of Sholom Rubashkin or his father, Abraham 'Aaron' Rubashkin. The plant's human resources manager pleaded to state child labor charges under an agreement with the state.