New York Times reporter Judith Miller was released from prison on Thursday after agreeing to testify before a grand jury investigating who in the Bush administration leaked the identity of covert CIA operative Valerie Plame. Miller said in a statement issued by the newspaper she was freed after her source “voluntarily and personally released me from my promise of confidentiality regarding our conversations.” The Times identified that source as Vice President Dick Cheney’s chief of staff, Lewis “Scooter” Libby. Miller agreed to appear on Friday before the grand jury in the case. The Times says Miller met with Libby on July 8, 2003 and talked with him by telephone later that week. Miller was in jail 3 months.