Documents from Pennsylvania's casino licensing process are being looked at by a state grand jury.
Pennsylvania Gaming Control Board spokesman Doug Harbach said Wednesday that the agency has been asked by the attorney general's office not to reveal details about the nature of the investigation.
But Harbach says the agency has provided a significant number of documents that gaming board employees created during the course of their review of applicants for casino licenses.
Harbach declined further comment.
The Tribune-Review of Pittsburgh first reported Wednesday that a Pittsburgh grand jury was looking into the paperwork.
A spokesman for Attorney General Tom Corbett didn't respond to a request for comment Wednesday.