The U.S. Department of Justice on Wednesday brought a lawsuit against Apple and several publishing companies over a scheme to fix e-book prices.

The suit stems from the 2010 release of the iPad, when Apple (AAPL, Fortune 500) reached an agreement with five publishers to release books on its then-new iBookstore. The DOJ said Apple colluded to raise the price of e-books with CBS's (CBS, Fortune 500) Simon & Schuster, News Corp.'s (NWS) HarperCollins, Hachette Book Group, Pearson's (PSO) Penguin unit and Macmillan.

European authorities are also probing Apple and the publishers for similar antitrust violations. Attorneys general for Connecticut and Texas led a handful of other states in separate litigation against the companies as well.