(CNN) The Republican nominee for a US House seat in Illinois has said the September 11 terrorist attacks were an inside job and that singer Beyonce Knowles has ties to the Illuminati.

Bill Fawell is running against incumbent Democratic Rep. Cheri Bustos in Illinois' 17th District, where she won by 20 points in 2016 even though the district also voted narrowly for Donald Trump. Fawell won his uncontested primary in March. He has not reported any fundraising to the Federal Election Commission, per publicly available records.

A KFile review reveals Fawell, a real estate broker, pushed conspiracy theories in blogs and his 2012 book, "New American Revolution."

In his book, Fawell pushed a conspiracy theory that 7 World Trade Center collapsed as part of a controlled demolition and the attacks were a plot to destroy documents.

"Go to YouTube and punch in 'Building #7' It's the third building that went down with the twin towers on 9/11," Fawell wrote. "Nothing hit this building, not a thing, and it fell entirely upon its own. If it looks like a standard commercial implosion demolition, it's because that is exactly what it is."

"It's interesting to note that the clandestine branch of the CIA was housed on the top floor," he added. "No personnel were lost, but any and all documents were destroyed, just like a giant shredder. The Pentagon was hit in a wing being remodeled (but few people), that held a mountain of paperwork regarding 1 trillion dollars which the Secretary of Defense, Donald Rumsfeld, was having trouble accounting for. That mountain of paperwork became a pile of ash."

In a February 2013 post on the blog of a political action committee he established in 2012 called Elect a New Congress, Fawell said that Beyonce's husband, rapper Jay-Z, "has a long history of serving up the godless Illuminati" and shared a YouTube video that speculated that Beyonce's upcoming halftime performance at the Super Bowl would have Illuminati symbolism.

The Illuminati is a secret society that serves as the basis for a popular conspiracy theory that alleges that many of the world's leaders and celebrities are masterminding world events.

In the same blog post, Fawell said that the previous Super Bowl's halftime show, performed by Madonna, was satanic and influenced by the Illuminati. He also called Madonna a "narcissist skank with the crooked teeth."

In an interview with CNN, Fawell stood by his blog posts and the theories he espoused on them. He said that Jay-Z and Beyonce expressed their support for the Illuminati in their videos, and that singer Taylor Swift had as well.

In explaining his rationale that 7 World Trade Center didn't collapse on its own, he said, "There's no way that 1,500-degree jet fuel can melt steel that requires 2,500-degree temperatures to melt." He also acknowledged that he didn't expect any support from the national Republican Party apparatus.

The Illinois Republican Party did not respond to a request for comment.

Another Illinois Republican nominee for a House seat, neo-Nazi Arthur Jones, has been rejected by national Republicans and the state party for denying the Holocaust.

In a 2014 post, Fawell speculated that New York City was going to be destroyed in a false flag attack by the deep state in either the year 2016 or 2017.

"New York City is going to be destroyed in the biggest, baddest false flag attack ever made by any organization upon the American People in a Pearl Harbor redux," Fawell wrote. (False flag attacks are acts designed by perpetrators to look like they were carried out by other individuals or groups.)

He said that the attack would be made in an attempt to drag America into war, and that financial institutions were already withdrawing money from New York in preparation for the supposed attack.

In another post in 2014, he wrote that then-President Barack Obama created false flag attacks to shore up support for his foreign policy intervention against ISIS.

In addition to alleging conspiracies, Fawell used sexist and racist slurs against politicians.

In one 2013 post he called former Secretary of State Colin Powell an "Uncle Tom" and called former Secretary of State Hillary Clinton a "bitch" as well as a witch.

He also regularly called Obama "Barry Soetoro" and sometimes called him "Barry Goddamn Soetoro Barack Hussain (sic) Obama."

When Obama lived in Indonesia as a child he sometimes was known as Barry Soetoro, as Soetoro was his stepfather's last name. Many conspiracy theorists allege that Soetoro is his real last name and use it to argue that he was not born in the United States.