Yet another one:

A federal grand jury has issued a subpoena to a reporter of The New York Times, apparently to try to force him to reveal his confidential sources for a 2006 book on the Central Intelligence Agency, one of the reporter’s lawyers said Thursday....

Mr. Risen’s lawyer, David N. Kelley, who was the United States attorney in Manhattan early in the Bush administration, said in an interview that the subpoena sought the source of information for a specific chapter of the book “State of War.”

The chapter asserted that the C.I.A. had unsuccessfully tried, beginning in the Clinton administration, to infiltrate Iran’s nuclear program. None of the material in that chapter appeared in The New York Times....

Mr. Risen, who is based in Washington and specializes in intelligence issues, is the latest of several reporters to face subpoenas in leak investigations overseen by the Justice Department.