The ref in question, Tim Donaghy, is being investigated for betting on league games, including some he officiated.

FORBES: Magazine Article

The FBI is investigating former referee Tim Donaghy for allegedly betting on games perhaps including those he officiated during the last two seasons.

NPR: Commissioner Says NBA Deserves Benefit of Doubt

Indeed, all the evidence suggests that when the wayward ref, Tim Donaghy, did make bad calls, he was so clever at it that the league's scrutiny failed to catch his dirty work.

NPR: Gambling on the NBA, Oh My!

And the NBA is confronting the news that one of its referees, Tim Donaghy, is under investigation for gambling and ties to organized crime - allegations that suggest he may have placed bets on games he officiated.

NPR: Sports World Grapples With Spate of Bad Press

But because the story has become public, and because of the sports environment we live in today which has been shaped in recent years by dishonesty in sports including a prominent cheating scandal in the NBA, the last thing the newly formed Pac-12 needs is a Tim Donaghy-sized black eye.

FORBES: Pac-12 Must Severely Penalize Ed Rush to Uphold Conference's Integrity