CHICAGO (AP) — The Federal Bureau of Prisons has pushed back the date it expects former U.S. House Speaker Dennis Hastert to be released from prison in his hush-money case.

Bureau of Prisons spokesman Justin Long told the Chicago Sun-Times that the reason for the adjustment “is not public information.” Hastert’s legal team declined comment.

The agency originally predicted Hastert would be released July 23, 2017. The bureau has since changed that to Aug. 16, 2017.

The 74-year-old Hastert is serving time at a federal prison in Rochester, Minnesota. He pleaded guilty to violating federal banking law in seeking to pay $3.5 million in hush money in a case that revealed he had sexually abused at least four boys decades ago when he coached wrestling at a suburban Chicago high school.