Running back Ronnie Harmon of the Buffalo...

Running back Ronnie Harmon of the Buffalo Bills has formally requested immunity from prosecution in a Chicago federal grand jury’s investigation of New York agents Norby Walters and Lloyd Bloom.

Harmon’s attorney asked for immunity for his client after the U.S. attorney’s office in Chicago informed him that Harmon is subject to indictment for fraud and tax evasion because of his dealings with Walters and Bloom.