A Missouri cattle farmer has been charged with first-degree murder in the deaths of two missing brothers from Wisconsin.

Court documents filed Wednesday in Caldwell County, Missouri, show Garland Nelson of Braymer is also charged with two counts of abandonment of a corpse, evidence tampering and other counts.

Nick and Justin Diemel of Shawano County, Wisconsin, were reported missing July 21 . They had been visiting Nelson's northwestern Missouri farm while on a trip related to their cattle business.

Human remains were found on the farm but haven't been publicly identified.

Nelson was charged in July with tampering with a vehicle rented by the brothers. Authorities say he abandoned the truck at a commuter parking lot.

An employee of the slain brothers says he believes a Missouri cattleman promised to give the men money to lure them to his farm so he could kill them.

Nelson, 25, of Braymer, was charged Wednesday with two counts of first-degree murder in the deaths of 35-year-old Nick Diemel and 24-year-old Justin Diemel, of Shawano County, Wisconsin.

Rob Chubb managed the feeder cattle side of the business operated by the brothers.

Chubb says he is angry, but that he knew from the day the brothers went missing that Nelson was involved. He says the brothers had done business with Nelson in January, and that Nelson owed them money.

Court documents indicate Nelson owed the Diemel family $250,000. Authorities haven't said the brothers were lured to the property.

Chubb says he "just can't believe somebody is so selfish, so cruel."