Materials from the Chicago Legislative Inspector General's Office were taken by FBI officials on Friday, reports Politico.
The FBI took the materials before Chicago Legislative Inspector General Faisal Khan's term ended Monday. The search is now underway in the Chicago City Council to find Khan's replacement, and the Chicago Legislative Inspector General's office is closed in the meantime.
"We received a subpoena of the FBI to take custody of our files and our computers with the understanding [that] we are working with them on a number of investigations," Khan said. "In order to protect the integrity of these cases, we had to take the extraordinary step to make sure they don't end up in the wrong hands."
Khan told Politico that the Chicago Legislative Inspector General's office and the feds were collaborating on "more than a handful" of confidential probes.
"I can't comment on what was turned over to the FBI," he added. "I can say when a prosecutor or law enforcement agency issues a subpoena, it comes with a number of requirements to show how they're relevant to their work."