[JURIST] AP is reporting that TIME magazine reporter Matthew Cooper has agreed to comply with government demands to testify before a grand jury [JURIST report] investigating the identity leak of CIA operative Valerie Plame [Wikipedia profile]. TIME previously turned over Cooper's notes [JURIST report]. Cooper told the judge presiding in his case Wednesday that he had received a direct communication from his source giving him permission to testify about the source's identity. AP has more.

2:57 PM ET – In a related development, AP is reporting that New York Times reporter Judith Miller has refused to reveal her source to the same grand jury.