Voices

News Corp. Unit Interested in Penguin Group

Rupert Murdoch’s News Corp. has expressed interest in buying book publisher Penguin Group, potentially undermining merger discussions between Penguin and Random House, people familiar with the situation said.

U.S. Warns Apple, Publishers

The Justice Department has warned Apple Inc. and five of the biggest U.S. publishers that it plans to sue them for allegedly colluding to raise the price of electronic books, according to people familiar with the matter.