GENARO C. ARMAS
BELLEFONTE, Pa. (AP) -- Jurors in Jerry Sandusky's trial are hearing about the alleged sexual abuse of a boy whose identity is unknown to prosecutors.
The testimony began Wednesday afternoon after the judge ruled that co-workers can tell the jurors about what a janitor reported seeing in the Penn State showers.
The janitor, Jim Calhoun, has dementia and isn't able to take the stand.
Ron Petrosky says that when he encountered Calhoun in a football team locker room more than a decade ago, the janitor told him he'd seen Sandusky making a boy perform oral sex on him.
Petrosky says Calhoun's face was white and his hands were trembling.
The 68-year-old Sandusky, a former Penn State assistant football coach, is fighting 52 criminal counts for alleged abuse of 10 boys over 15 years.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)