Bob Costas said last month he had "some responsibility to follow the story" of the Freeh report and the Paterno family's rebuttal.

He will push that story forward on "Costas Tonight" at 11 p.m. on NBC Sports Network, according to network spokesman Adam Freifeld. The start of the show could be delayed if Game 7 of the NHL's Western Conference semifinals were to run late.

Among the guests on the show are Paterno family attorney Wick Sollers, former Pennsylvania Gov. Dick Thornburgh and Paterno family spokesman Dan McGinn.

The three men will announce on the show a new lawsuit against the NCAA on behalf of Penn State and the Paterno family, Freifeld told PennLive today.

The Paternos have praised Gov. Tom Corbett's federal trust lawsuit against the NCAA and has long been rumored to file a suit of its own. The family demanded an appeal of NCAA sanctions against Penn State's football program last summer, which were based on findings from the Freeh report.

The NCAA's disciplinary measures were "handled in a fundamentally inappropriate and unprecedented manner," Sollers wrote in an appeal letter last August.

Senate Appropriations Committee Chairman Jake Corman also filed a lawsuit against the NCAA, aiming to keep the proceeds of a $60 million fine levied against Penn State for in-state organizations.

Costas has expressed a degree of skepticism about the Freeh report's findings and said the Paterno family had reason to conduct an investigation of its own.

The Freeh report concluded that former coach Joe Paterno and officials Tim Curley and Gary Schultz actively concealed information about Jerry Sandusky, who was found guilty of 45 counts of child sexual abuse.

The NCAA then hammered the Penn State football program with sanctions, including a $60 million fine, scholarship reductions and a four-year bowl ban. Penn State opted to not appeal those penalties.