INDIANAPOLIS -- Some Indiana politicians are distancing themselves from an Indianapolis businessman and major contributor whose businesses are under investigation by the FBI.

Agents on Tuesday raided the offices of Tim Durham's Obsidian Enterprises Inc., a leveraged-buyout firm, located on the top floor of the Chase Tower in downtown Indianapolis, and the Akron, Ohio-based Fair Finance Co.

Images: Inside Durham's House
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A search of campaign finance records showed that the 47-year-old contributed at least $809,653 to candidates and political committees, virtually all of them Republicans, at the local, state and federal levels in the last few years, 6News' Norman Cox reported.

Gov. Mitch Daniels, who aides said was leaving town for the holidays and unavailable Wednesday, received the most Durham money at $280,000.

Marion County Prosecutor Carl Brizzi, who acknowledged Durham as a friend, got $178,949 of the financier's cash and services, and had been asked to serve on the board of Fair Financial.

Brizzi said he turned down the post after an investigative piece in the Indianapolis Business Journal questioned whether Fair Finance had the financial ability to repay Ohio investors who bought nearly $200 million in investment certificates.

"While I initially accepted the position, I never attended a meeting of the board, never voted as a board member, was never involved in any of the business decisions of Fair Financial and was never compensated as a member of the board," Brizzi said in a statement Wednesday.

Meanwhile, the state GOP received at least $150,000 from Durham, and the Marion County party and its finance arm got $66,200.

Tim Motsinger, a Republican who was running for Marion County sheriff, announced he was leaving the race due to the loss of Durham's financial support. Durham also served as campaign finance chairman for the campaign.

House Republican leader Brian Bosma and his caucus's campaign committee received $54,580.

Bosma told 6News that Durham hadn't contributed in recent years. He said he didn't know why, possibly philosophical differences.

Bill Oesterle, Daniels' campaign manager in 2004, said Durham struck him as someone who contributed because he liked politics and enjoyed having a high profile with politicians.

He said he doesn't believe Durham was trying to gain government business by donating to candidates?

"In fact, it was one of those cases where (there was) never even the slightest hint of attempting to influence. As far as I know, he had absolutely no government contracts," Oesterle said.

Although almost all of Durham's money went to Republicans, there was one exception -- he donated $5,600 to Democratic Congressman Baron Hill.

Durham's attorney, John Tompkins, told 6News' Renee Jameson, that his client is confident he's done nothing wrong.

"I mean we are literally less than 24 hours from the time that the seizures began … It would be irresponsible to comment on what avenue this is going to follow at this point. We just don't know," Tompkins said.

Ohio Department of Commerce spokesman Dennis Ginty told 6News' Renee Jameson that Fair Finance's registration had expired, and that it is not longer allowed to sell securities to Ohio investors.

Michael S. Welch, FBI special agent in charge in Indianapolis, confirmed that agents carried out searches of the offices, but said that the warrants are sealed and that the FBI would not provide any specifics.

He asked anyone who had dealings with Fair Financial Services to call 1-800-CALL-FBI.

In 2007, 6News toured Durham's 30,000-square-foot-home near Geist Reservoir. The seven-bedroom mansion includes a private apartment, where the late Anna Nicole Smith once stayed during the Indianapolis 500, and a two-story garage housing Durham's extensive classic car collection.