The Justice Department obtained a portfolio of Fox News' James Rosen, including a record of his conversations and visits as part of an investigation into a possible leak, The Washington Post reported on Monday.

The information involved tracking Rosen's movements inside the State Department with a government-issued ID pass. The feds also got access to Rosen's phone records and got a warrant to examine his personal email account.

The effort to track the prominent reporter was part of the case ongoing against State official Jin-Woo Kim.

It comes just a week after the Associated Press revealed that DOJ had obtained a sweeping subpoena that provided two months' worth of phone records for over 20 different phone lines used by 100 journalists.

The government's case against Kim began after Rosen reported in an online story about US intelligence official warnings that North Korea would likely respond to US sanctions with additional nuclear tests, the New York Post reported.

The FBI tracked Rosen's movements in and out of State, matching them up against Kim's movements, according documents that include the statements of an FBI agent.

The data about the movements, gleaned from State's security system, were used to try to establish that the two had a "face-to-face" meeting off campus, according to the affidavit. The affidavit, includes a statement by FBI agent Reginald Reyes that there was evidence Rosen broke the law "at the very least, either as an aider, abettor and/or co-conspirator."

A range of members of Congress condemned the government's sweeping examination of the AP's phone records last week. 

The AP revealed last week that federal agents had collected two months of telephone records for some of its reporters and editors without notifying it of the subpoena. The seizure of records from the AP office spanned two months.