KANSAS CITY, Kan. (AP) — A court-appointed official looking into the taping of attorney-client meetings at a federal detention center in Kansas says the state's U.S. attorney's office is no longer cooperating with his investigation.

Special Master David R. Cohen said in a report obtained by KCUR Radio that he received a 24-page letter last month from the U.S. attorney's office stating that it will no longer provide him with information and documents as part of his investigation of claims involving the Leavenworth Detention Center.

The decision may heighten suspicions that the U.S. attorney's o...