Xerox stock fell 11 per cent on the New York Stock exchange after the company announced that the US Attorney's office is investigating its accounting practices.
The practices were previously reviewed by federal authorities in a probe that led to a record $10 million civil penalty.
The company's stock fell 71 cents a share to 5.96 dollars (£3.97) on the New York Stock Exchange.
Xerox issued a statement on Monday night announcing the new investigation and saying it would cooperate with federal prosecutors.
