STATE COLLEGE, Pa. -- Two top Penn State officials charged with covering up allegations of an explosive child-sex abuse scandal related to former defensive coordinator Jerry Sandusky vacated their positions Sunday after an emergency meeting of the university's Board of Trustees.

Penn State athletic director Tim Curley requested to be placed on administrative leave so he could devote the time needed to defend himself against perjury and other charges, university president Graham Spanier said. Gary Schultz, vice president for finance and business, will step down and go back into retirement, Spanier said. He declined to comment to reporters after the meeting.

Resignations of famed football coach Joe Paterno and Spanier were not discussed at the meeting, which was arranged Sunday and lasted two hours, university spokesman Bill Mahon said.

Curley and Schultz were charged Saturday after a grand jury investigation of Sandusky, who has charged with sexually abusing eight boys over 15 years. Lawyers for all three men have said their clients are innocent.

Sandusky, once considered Paterno's heir apparent, retired in 1999 but continued to use the school's facilities for his work with The Second Mile, a foundation he established to help at-risk kids. Curley and Schultz are accused of failing to alert police -- as required by state law -- of their investigation of the allegations.

"This is a case about a sexual predator who used his position within the university and community to repeatedly prey on young boys," state attorney general Linda Kelly said Saturday.

In a statement, The Second Mile said that to "our knowledge, all the alleged incidents occurred outside of our programs and events." The group also said it never was made aware of the allegations against Sandusky in the grand jury report.

Kelly and state police commissioner Frank Noonan are expected to hold a 1 p.m. ET news conference Monday a few miles from the Harrisburg district court. The arraignment of both Curley and Schultz is scheduled for 2 p.m. ET.

Paterno, who last week became the coach with the most wins in Division I football history, wasn't charged, and the grand jury report didn't appear to implicate him in wrongdoing.

In a statement issued Sunday night, Paterno said he was shocked, saddened and as surprised as anyone to hear of the charges.

"If this is true we were all fooled, along with scores of professionals trained in such things, and we grieve for the victims and their families. They are in our prayers," Paterno said in a statement issued by his son, Scott.

Curley was named athletic director on Dec. 30, 1993. Senior associate athletic director Mark Sherburne will serve as interim athletic director until Curley's legal situation is resolved, board chairman Steve Garban said.

Schultz served as senior vice president and treasurer from 1993 to 2009. He returned to the job this year to fill in until someone else could be found. The Board of Trustees named a child care center on campus after Schultz in January 2010.

The allegations against Sandusky, who started The Second Mile in 1977, range from sexual advances, to touching, to oral and anal sex. The young men testified before a state grand jury that they were in their early teens when some of the abuse occurred; there is evidence even younger children may have been victimized. Sandusky's attorney Joe Amendola said his client has been aware of the accusations for about three years and has maintained his innocence.

A preliminary hearing scheduled for Wednesday likely would be delayed, Amendola said. Sandusky is charged with multiple counts of involuntary deviate sexual intercourse, corruption of minors, endangering the welfare of a child, indecent assault and unlawful contact with a minor, as well as single counts of aggravated indecent assault and attempted indecent assault.

The first case to come to light was a boy who met Sandusky when he was 11 or 12, the grand jury said. The boy received expensive gifts and trips to sports events from Sandusky, and physical contact began during his overnight stays at Sandusky's home, jurors said. Eventually, the boy's mother reported the allegations of sexual assault to his high school, and Sandusky was banned from the child's school district in Clinton County in 2009. That triggered the state investigation that culminated in charges Saturday.

But the report also alleges much earlier instances of abuse and details failed efforts to stop it by some who became aware of what was happening.

Another child, known only as a boy about 11 to 13, was seen by a janitor pinned against a wall while Sandusky performed oral sex on him in fall 2000, the grand jury said.