Copier giant

Xerox

(XRX) - Get Xerox Holdings Corporation (XRX) Report

said Monday evening that it was the subject of an investigation by the U.S. attorney's office over the irregular accounting that led it to restate more than $1.9 billion in revenue earlier this year.

In a prepared statement, the company said the investigation concerned the past accounting issues which it had settled with the

TheStreet Recommends

Securities and Exchange Commission.

.

Earlier this year, the Securities and Exchange Commission charged Xerox with using irregular accounting to boost revenues from 1997 to 2000. In June, Xerox agreed to pay a $10 million penalty but did not admit or deny any wrongdoing. It also restated about $1.9 billion of a total of $92.5 billion in revenues that were reported during that period.

The company said it would cooperate fully with U.S. attorneys.

Xerox closed off 32 cents, or 4.6%, to $6.68.