Newark Mayor Cory Booker (Lynne Sladky/AP)

The conservative National Review reports that a Rutgers University professor says Cory Booker admitted to him that a drug-dealing friend that Booker has frequently talked about on the campaign trail was an invented character.

Booker in the past has regularly talked about a drug-dealer named "T-Bone," but questions were raised years ago — and are being raised again now that Booker is likely to become a U.S. senator — about whether that person actually exists.

Booker has said T-Bone is "1,000 percent real."