Photo: The Canadian Press. All rights reserved.

Pennsylvania Gov. Tom Corbett speaks at a news conference Wednesday, Jan. 2, 2013 in State College, Pa. The NCAA overstepped its authority by imposing hefty sanctions on Penn State University in the wake of the Jerry Sandusky child molestation scandal, Corbett said in announcing a federal lawsuit against the college athletics governing body. (AP Photo/Ralph Wilson)

Pennsylvania's governor, in a challenge to the NCAA's powers, claimed in a lawsuit Wednesday that college sports' governing body overstepped its authority and "piled on" when it penalized Penn State over the Jerry Sandusky child molestation scandal.

Gov. Tom Corbett asked that a federal judge throw out the sanctions, which include an unprecedented $60 million fine and a four-year ban on bowl games, arguing that the measures have harmed students, business owners and others who had nothing to do with Sandusky's crimes.

"A handful of top NCAA officials simply inserted themselves into an issue they had no authority to police under their own bylaws and one that was clearly being handled by the justice system," Corbett said at a news conference.

The case, filed under federal antitrust law, could define just how far the NCAA's authority extends. Up to now, the federal courts have allowed the organization broad powers to protect the integrity of college athletics.

In a statement, the NCAA said the lawsuit has no merit and called it an "affront" to Sandusky's victims.

Penn State said it had no role in the lawsuit. In fact, it agreed not to sue as part of the deal with the NCAA accepting the sanctions, which were imposed in July after an investigation found that football coach Joe Paterno and other top officials hushed up sexual-abuse allegations against Sandusky, a former member of Paterno's staff, for more than a decade for fear of bad publicity.

The penalties include a cut in the number of football scholarships the university can award and a rewriting of the record books to erase 14 years of victories under Paterno, who was fired when the scandal broke in 2011 and died of lung cancer a short time later.

The lawsuit represents a reversal by the governor. When Penn State's president consented to the sanctions last summer, Corbett, a member of the Board of Trustees, embraced them as part of the university's effort to repair the damage from the scandal.

Corbett said he waited until now to sue over the "harsh penalties" because he wanted to thoroughly research the legal issues and did not want to interfere with the football season.

The deal with the NCAA has been unpopular with many fans, students and alumni. Corbett, who is up for re-election next year, deflected a question about whether his response has helped or hurt him politically.

"We're not going to get into the politics of this," he said.

An alumni group, Penn Staters for Responsible Stewardship, applauded the lawsuit but said Corbett should have asked questions when the NCAA agreement was made.

"If he disapproved of the terms of the NCAA consent decree, or if he thought there was something illegal about them, why didn't he exercise his duty to act long before now?" the group said.

Paterno's family members said in a statement that they were encouraged by the lawsuit. Corbett "now realizes, as do many others, that there was an inexcusable rush to judgment," they said.

The lawsuit accuses the NCAA of cynically exploiting the Sandusky case, saying its real motives were to "gain leverage in the court of public opinion, boost the reputation and power of the NCAA's president" and "enhance the competitive position of certain NCAA members." It said the NCAA has not cited a rule that Penn State broke.

Corbett charged that the NCAA violated the Sherman Antitrust Act, which prohibits agreements that restrain interstate commerce. Legal experts called it an unusual case whose outcome is difficult to predict.