After Enron whistleblower Sherron Watkins warned of accounting scandals in August 2001, Arthur Andersen began destroying Enron documents on October 10, 2001. When the SEC announced its investigation on October 17, destruction accelerated. Partners ordered employees to work overtime shredding. Dozens of large trunks hauled documents between offices. The shredder ran 'virtually constantly.' Offices in Houston, Portland, Chicago, and London all participated. The shredding stopped only on November 8 when the SEC served subpoenas. Andersen was indicted for obstruction of justice. The fraud totaled over $74 billion in shareholder losses.