Yesterday it emerged that New York Times reporter Judith Miller had been released from jail in return for the promise to testify in the probe into the outing of CIA agent Valerie Plame. As the AP's Pete Yost reports, today Miller was is court.

New York Times reporter Judith Miller testified before a grand jury Friday, ending her silence in the investigation into whether White House officials leaked the name of a covert CIA operative, Valerie Plame.

Miller, free after 85 days in jail, spent more than three hours inside the federal courthouse in downtown Washington, most of it behind closed doors with a grand jury.

Miller arrived at about 8:30 a.m. at the courthouse as part of an agreement reached Thursday with Special Counsel Patrick Fitzgerald to disclose her conversations in July 2003 with Vice President Dick Cheney's chief of staff, I. Lewis "Scooter" Libby.

Miller said in a statement that her source — identified by the Times as Libby — had released her from her promise of confidentiality.

The Plame grand jury is slated to wrap up on October 28 -- one week after Tom DeLay is scheduled to appear in court to face criminal conspiracy charges. November might just prove to be a very long month for Republicans.