10:05 AM

A McDonald County man with ties to twin brothers, Dennis and Daniel Mahon, who are alleged to be white supremacists and have been charged in a racially motivated Arizona bombing will be held in jail without bond.

Robert Joos was arrested as part of an investigation into the 2004 mail bombing in Scottsdale, Ariz., that injured the director of a diversity office in Scottsdale. Prosecutors allege that the first call one of the Mahon brothers made before the bombing was to Joos.

ATF agents executed a search warrant on Joos' property June 24 and found bomb-making materials, according to documents filed in U. S. District Court for the Western District of Missouri.

"A confidential informant and two undercover ATF agents visited Joos at his McDonald County property on three occasions in January 2008 and in January and February 2009. During those visits, the affidavit says, they observed several firearms and ammunition." The affidavit says that Joos provided undercover ATF agents with instructions, including what soap to use, to make a homemade napalm.

U.S. Chief Magistrate Judge James C. England ordered Robert N. Joos be held on charges of being a felon in possession of firearms. England said in his ruling that a search of Joos' property in McDonald County found more than a dozen firearms, blasting caps, gunpowder and fuses.

Federal prosecutors allege that an undercover investigation found that people involved in the white supremacist movement in the U.S. got survival training at Joos' property.

In 1994 authorities in McDonald County raided the self-proclaimed preachers compound, The Sacerdotal Order of the David Company, and were stunned at what they found. Stockpiled inside the compound were weapons, ammunition and dynamite. Joos, claimed the weapons were meant for trading. Joos was release from prison in 1997.

***Joos compound raid image courtesy of Lucky Dog Blog