HARRISBURG, Pa. – The "conspiracy of silence" that protected Jerry Sandusky extended all the way to the top at Penn State, prosecutors said Thursday as they charged former university President Graham Spanier with hushing up child sexual abuse allegations against the former assistant football coach.

Prosecutors also added counts against two of Spanier's former underlings, Tim Curley and Gary Schultz, who were already charged with lying to a grand jury.

"This was not a mistake by these men. This was not an oversight. It was not misjudgment on their part," said state Attorney General Linda Kelly. "This was a conspiracy of silence by top officials to actively conceal the truth."