The government would not say why it sought the records. Officials have previously said in public testimony that the U.S. attorney in Washington is conducting a criminal investigation into who may have provided information contained in a May 7, 2012, AP story about a foiled terror plot. The story disclosed details of a CIA operation in Yemen that stopped an al-Qaida plot in the spring of 2012 to detonate a bomb on an airplane bound for the United States.
In testimony in February, CIA Director John Brennan noted that the FBI had questioned him about whether he was AP's source, which he denied. He called the release of the information to the media about the terror plot an "unauthorized and dangerous disclosure of classified information."
Prosecutors have sought phone records from reporters before, but the seizure of records from such a wide array of AP offices, including general AP switchboards numbers and an office-wide shared fax line, is unusual.
In the letter notifying the AP, which was received Friday, the Justice Department offered no explanation for the seizure, according to Pruitt's letter and attorneys for the AP. The records were presumably obtained from phone companies earlier this year although the government letter did not explain that. None of the information provided by the government to the AP suggested the actual phone conversations were monitored.
Among those whose phone numbers were obtained were five reporters and an editor who were involved in the May 7, 2012, story.
The Obama administration has aggressively investigated disclosures of classified information to the media and has brought six cases against people suspected of providing classified information, more than under all previous presidents combined.
The White House on Monday said that other than press reports it had no knowledge of Justice Department attempts to seek AP phone records.