WASHINGTON (AP) – The Justice Department announced Tuesday it has reached a settlement with Penguin Group (USA) Inc. in its lawsuit accusing the nation’s largest book publishers of colluding with Apple Inc. to raise e-book prices on customers.

The settlement, if approved by a federal judge, leaves Apple and Holtzbrinck Publishers LLC, which does business as Macmillan, as the only defendants standing against the federal government’s charges that Apple, the multimedia and computer giant, conspired with several publishers in the fall of 2009 to force e-book prices several dollars above the $9.99 charged by Amazon.com on its popular Kindle device.