A former federal prosecutor tapped to represent NBA referees in the league's review of its officiating counseled five referees interviewed by the FBI during the Tim Donaghy probe.

The five had no inkling that Donaghy was betting on games, lawyer Gregory T. Magarity said.

"They all knew him. They all reffed with him. But none of them knew anything about illegal gambling," Magarity said Thursday from his office in Philadelphia.

"He was doing this stuff from pay phones, calling bets into somebody. Nobody saw anything; no one suspected anything like that," Magarity said.