CHICAGO – A well-connected businessman once known as the King of Clout for the enormous behind-the-scene influence he wielded in Illinois politics reported to prison on Tuesday to start a yearlong sentence for trying to extort a Hollywood movie producer.

William Cellini, 78, reported to the Federal Correctional Institution in Terre Haute, Ind., located about 120 miles east of his hometown of Springfield, Ill., Bureau of Prisons spokesman Chris Burke said. It's the same prison where former Illinois Gov. George Ryan is completing a 6 1/2 -year corruption sentence.

Cellini is in a minimum-security section known as the Federal Prison Camp Terre Haute, which has a miniature golf course, tennis courts and other amenities and lacks the high walls or guard tower of higher security facilities.