White supremacist James Wickstrom was allegedly the target of a murder plot by another white supremacist in Michigan.

Keith Eugene Kallstrom, 54, of Tulsa, Oklahoma, was arrested on August 2 at a McDonald's near Wickstrom's home in Pinconning, Michigan.  During a search of Kallstrom's truck, police allegedly discovered four hand grenades and several firearms, which they say Kallstrom intended to use to kill Wickstrom.

Wickstrom, a Christian Identity minister and so-called "World Chaplain" of Aryan Nations, has advocated the killing of public officials, Jews and minorities.

According to the FBI, the agency had previously warned Wickstrom that it had received intelligence suggesting that Kallstrom might target him.

Two years ago, Kallstrom reportedly said that Wickstrom had been secretly calling his wife for months before she became Wickstrom's secretary and nanny.  Later, Kallstrom's wife filed a personal protection order against her husband, who reportedly sent her threatening letters.  In 2004, Kallstrom filed for a divorce from his wife.

Kallstrom is scheduled to be arraigned in District Court on explosives and firearms charges, as well as violating a personal protection order.  Federal charges may follow.