08/29/2012 01:05 pm ET Updated Aug 29, 2012

Herman Cain Pays For Investigation Into Sexual Impropriety Reports, Insists He Could Have Been The Presidential Nominee (VIDEO)

Former Republican presidential hopeful Herman Cain said this week that he's personally paying for an investigation to determine the source of the "sexual impropriety reports" that he alleges brought down his campaign.

“The [GOP] process is fair but many people that are involved in the process are not fair and they are not honest," Cain said on CBS Sunday. "If everyone had competed fairly and honestly, I’d probably be the nominee being nominated this week.

Cain abandoned his presidential bid last December amid escalating allegations of sexual impropriety.

In late October 2011, two women had come forward accusing Cain of sexual harassment and misconduct during his time as CEO of the National Restaurant Association in the late 1990s. Similar accusations were later made by two additional women.

Cain was also accused of having an extramarital affair that allegedly lasted more than a decade.

The former presidential candidate has staunchly denied the accusations. According to a December 2011 report by The New York Times, Cain had initially sought to "cast blame for what he called a smear campaign in a number of different directions," first accusing the news media, then the rival campaign of Texas Governor Rick Perry.

However, the Cain campaign ultimately acknowledged that it had no evidence of a conspiracy.

But speaking to CNN's Wolf Blitzer on Monday, Cain said that he has now hired investigators who are "actively looking into the allegations" that he claims foiled his bid for president.

"It was a well coordinated effort. All you have to do is look at publicly what happened. Three consecutive weeks, three different stories attacking my character and attacking me to create doubt in the minds of many of my supporters," Cain said. "That's what forces me to drop out of the campaign, because of the pain it caused my family by spinning these false accusations and lies over and over and over and over."

He told CNN that the money for the investigation is coming out of his own pocket.

My character, my reputation is much more than dollars. We’re going to get to the bottom of this.” he said, according to Politico.

Check out the slideshow below for more details on Herman Cain's GOP campaign:

Moments From Herman Cain's Campaign