Mother of 'Victim 1' speaks out

Sandusky is accused of molesting at least eight boys. He was arrested Nov. 5.

The mother of one of the victims of former Penn State defensive coordinator Jerry Sandusky named in a grand jury statement spoke publicly for the first time in an exclusive interview with ABC News.

The woman, the mother of the boy named 'Victim 1' in the grand jury report, spoke with ABC's George Stephanopoulos.

'You know, maybe we should have come to this conclusion earlier -- you should have told me,'" the mother, whose face was shadowed and voice altered, said during the interview.

"Even if they had the slightest inclination that anything inappropriate was going on it should have been reported," she said.

WATCH: has the full interview with the victim's mother.

Obama says that the Penn State sex abuse scandal should lead to "soul-searching" by all Americans, not just Penn State.

Meanwhile, Penn State assistant coach Mike McQueary, a key witness in the child sex abuse scandal that has engulfed the school, has been placed on administrative leave.

School president Rod Erickson announced the move Friday, a day after the school said McQueary would not be present when the Nittany Lions play Nebraska on Saturday because he has received threats.

McQueary testified in a grand jury investigation that eventually led to child sex-abuse charges being filed against former Penn State defensive coordinator Jerry Sandusky. The ensuing scandal brought down longtime coach Joe Paterno, who was fired by university trustees amid growing criticism that he should have done more to stop the alleged abuse.

McQueary, who testified that he saw Sandusky sodomizing a boy in the shower in 2002, has endured similar scrutiny. The university's athletic department released a one-line statement Thursday night saying it would be "in the best interest of all" if the receivers coach didn't attend the season's final home game at Beaver Stadium. The school did not provide details on precisely who threatened McQueary.

"It became clear that coach McQueary could not function in this role under these circumstances," Erickson said Friday, adding McQueary was told of the decision Friday afternoon.

Besides Paterno, school president Graham Spanier also has been fired.

After receiving numerous threats, the school decided that receivers coach Mike McQueary, who allegedly witnessed Sandusky abusing a young boy in a shower in 2002, will not coach in Saturday's game between the Nittany Lions and Nebraska Cornhuskers.

The grand jury report alleges that Sandusky fondled Victim 1 "on a number of occasions, performed oral sex on Victim 1 on a number of occasions and had Victim 1 perform oral sex on him on at least one occasion."

Sandusky met the victim through his Second Mile charity when the boy was 11 or 12 years old, according to the documents. The grand jury statement says Sandusky took the boy to events, including Penn State practices, and invited the boy to sleep over at his house.

During those sleepovers, the documents state the victim would stay in a basement bedroom. The statement alleges that Sandusky made the boy lay on top of him, kissed him on the mouth and ultimately performed oral sex on him, the documents state. The victim eventually broke off contact with Sandusky.

More: A timeline of the Penn State scandal

In another incident, Sandusky allegedly inappropriately approached the boy at the boy's schools gym, where Sandusky was a coach. Another coach walked in on Sandusky and the boy "lying on their sides, in physical contact, face to face on a mat."

Sandusky was indicted on Nov. 4 and turned himself in to police the following day. Felony perjury charges were also brought against Tim Curley, Penn State's athletic director, and Gary Schultz, the school's vice president for finance and business, who allegedly knew of at least one incident in which Sandusky abused a boy in the Penn State locker room showers. The grand jury report states they did not report the incident to police.

Long-time Penn State football coach Joe Paterno and University President Graham Spanier were ousted Wednesday.

Next page: A statement from Penn State's interim president

On Thursday, Penn State Interim President Rodney Erickson addressed the scandal as one of the lowest moments in the university's history.

"It has been difficult to comprehend the horrific nature of the allegations that were revealed in the Attorney General's presentment last week," Erickson said on the day he took over after the firing of Graham Spanier.

Here is the full text of the statement:

This is one of the saddest weeks in the history of Penn State. It has been difficult to comprehend the horrific nature of the allegations that were revealed in the Attorney General's presentment last week. As a member of the Penn State community for 34 years, as a parent, and as a grandfather, I find the charges as they have been described to be devastating, and my heart goes out to those who have been victimized and their families. This is a terrible tragedy for everyone involved, and it will take some time to bring a measure of understanding and resolution to the community.

In addition to the legal process under way, Penn State's Board of Trustees has authorized a full investigation " determine what failures occurred, who is responsible, and what measures are necessary to insure that this never happens at our University again and that those responsible are held fully accountable." As those involved pursue their cases, I also urge you, as Penn Staters, to be patient, to avoid speculation, and to refrain from passing judgment until the facts are known.

As you are now aware, the Board of Trustees has asked me to serve as the interim president of Penn State effective immediately. I undertake these duties with a firm sense of resolve, and I ask for your support as we move forward. And move forward, we must and we will.

Penn State has a long and storied tradition that has endured for more than 150 years. Our roots are deep, our constitution is resilient, and the importance of our work is as vital today as it was last week - perhaps even more so in the face of such adversity. We are 96,000 students, 46,000 employees, and more than a half a million alumni. We are 24 campuses across the Commonwealth and a World Campus. We are a university that is committed to its core values of honesty, integrity, and community. We are a university that will rebuild the trust and confidence that so many people have had in us for so many years.

Through your conduct every day, you can play a role in restoring the integrity, honor, and pride that have always characterized Penn State. I share your anger and sadness in this time, but always remember that your actions reflect on the entire Penn State community. Please set an example that will make us all proud. Moving forward is the only responsible course to take in the coming months. I ask for the full support of our faculty, students, staff, and alumni, and in return I will do my best to lead this institution through the challenges ahead.

Thank you for being a part of Penn State.