A US judge has ruled that Apple conspired with publishers to raise the price of electronic books, the Associated Press reports.
Manhattan judge Denise Cote said the firm "created a mechanism and environment that enabled them to act together in a matter of weeks to eliminate all retail price competition for their e-books."
She also ordered a new hearing to determine damages to be imposed on the technology firm.
The conspiracy was said to be designed to challenge online retailer Amazon's dominance of the burgeoning market.
Assistant Attorney General Bill Baer called the ruling "a victory for millions of consumers who choose to read books electronically."
Apple spokesman Tom Neumayr said: "We will continue to fight against these false accusations. We've done nothing wrong."
More top news
It's another mild day in the north and west, but cold in the south and central England.
The singer, songwriter and rhythm guitarist for the British rock'n'roll band died on Christmas Eve aged 68.
During a five-day period last week, two police forces stopped 151 motorists for various offences on the M3, M4, M40, M27 and A34.