The Associated Press is reporting that the Justice Department secretly obtained two months' worth of its phone records in what it calls a "massive and unprecedented intrusion" into its newsgathering process.

According to the news organization, the phone records obtained stemmed from a May 7, 2012, story about a CIA operation that thwarted a terror attack in Yemen. While the news media are generally informed when their phone records are subpoenaed, the Justice Department reportedly claimed an exemption that allows them not to avoid notification if it threatens the integrity of the investigation.