Brock's longtime friend to challenge him in 2012

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GILBERT, Ariz. - Maricopa County Supervisor Fulton Brock's wife is serving a prison sentence for sexually abusing a minor, his daughter is awaiting trial for molesting the same boy, and he is under increasing scrutiny over how much he knew about it. Now a longtime friend is running to replace him as supervisor.

Private investor C. Denny Barney, 41, filed papers to enter the race for Supervisor of District 1 on April 11, four days after Susan Brock was sentenced to 13 years behind bars for her relationship with the teen.

In an exclusive interview with 3TV, Barney said he and Brock have been friends for years.

"Frankly this isn't about me running against Fulton, this is about me running for a seat," said Barney. "I think now's the right time, I think Fulton's got a lot that he's dealing with."

Recently released police reports suggest Brock knew more about his wife's involvement with the boy than he's let on. On Wednesday, Chandler police confirmed Brock wrote a note outlining a defense strategy for his wife, days before her arrest.

Barney called the Brock's family situation "heartbreaking."

Barney, a sixth-generation Valley resident, lives in Gilbert and is a a principal at ARCUS Private Capital. He's served on the Maricopa County Planning and Zoning Commission and is active in several non-profits.

His father, the late T. Denny Barney, was a well known philanthropist and local leader of the Mormon church.

Brock's spokesperson said he has not made a decision on whether to seek re-election in 2012.