Authorities have confirmed that the human remains found in two separate locations last week belong to two missing brothers who were shot dead in Missouri earlier this year.

Nick Diemel, 35, and his brother Justin, 24, both of whom lived in Shawano County, Wisconsin, were reported missing in July and a Missouri farmer is accused of their murder.

Nick Diemel's remains were found on a farm in Caldwell County, Missouri, while his brother's remains were discovered by a rancher in a livestock trailer in Lincoln County, Nebraska.

The rancher had just bought the trailer through an online ad from a seller in Missouri, according to investigators in Nebraska.

Authorities confirmed that two bodies found this week in two locations in Nebraska and Missouri belong to two brothers - Nick and Justin Diemel - who went missing in the summer. Nick is seen left with his wife, Lisa Diemel. Justin is seen right with girlfriend Taylor Moeller

Nick Diemel's remains were found on a farm in Caldwell County, Missouri (seen above)

The farm belonged to the suspect, Garland Nelson, 25, of Braymer, Missouri, who is accused of fatally shooting the two brothers before burning their bodies and dumping them in a manure pile

The Caldwell County, Missouri, Sheriff's Office said on Friday that it confirmed the identity of the brothers through the use of dental records, WDAF-TV reported.

The farm in Caldwell County where Nick Diemel's remains were found belongs to the suspect, Garland 'Joey' Nelson.

After Justin's remains were found in Hershey, Nebraska, Nick's wife, Lisa Diemel, posted an angry message on Facebook slamming Lincoln County Sheriff Jerome Kramer for revealing certain details about the discovery to the media on Monday that were unbeknownst to the family.

Lisa Diemel wrote that the sheriff 'failed in protecting the integrity of Justin's case.'

Lisa Diemel, Nick Diemel's wife, was angered by the Lincoln County, Nebraska, Sheriff's Office announcement on Monday that it found Justin's remains and alerted the press before notifying the family

'Hopefully the minutes of fame you received by the news media yesterday with your interview was worth it ... Please pray for (the family) as no loved one should ever have to find out specific gruesome details of body parts on the 4 o'clock news,' she wrote.

Nelson, 25, of Braymer, Missouri, is accused of fatally shooting the two brothers before burning their bodies with diesel fuel inside two large, 55-gallon metal barrels.

The brothers, owners of Diemel’s Livestock in Navarino, Wisconsin, visited Nelson at his Missouri farm to collect on a $250,000 debt, according to the brothers' father, Jack Diemel.

The father reported his sons missing on July 21 after they failed to show up for a flight home to Milwaukee and did not answer their phones.

According to a probable cause statement, Nelson shot the brothers, put their bodies in 55-gallon metal barrels and used a skid loader to move them one at a time from a barn to a pasture.

There, he allegedly burned them using diesel fuel and an unknown liquid and allegedly hid the barrels elsewhere in his property.

Nelson faces two counts of first-degree murder and is also charged with two counts of abandonment of a corpse and with evidence tampering.

'Murder victim': Justin Diemel (pictured) and his older brother were reported missing on July 21 and a Missouri farmer is accused of shooting them dead

The charges carry a possible sentence of life imprisonment or the death penalty. Garland has yet to enter a plea.

He is charged with two counts of first-degree murder.

Nelson also faces several charges related to his alleged attempts to cover up the crimes.

They include two counts of abandonment of a corpse, two counts of tampering with physical evidence in a felony prosecution, two counts of armed criminal action, one count of first-degree tampering with a motor vehicle and one count of unlawful possession of a firearm.

Nelson was on federal probation after serving time in prison. He was tried in federal court in 2016 for financial crimes related to the selling of cattle.

It is illegal for anyone convicted of a crime to possess a gun. Nelson is reported to have confessed to police that he owns a firearm.

Nick Diemel (pictured) is the father of four children, aged one to 17. He and his brother Justin, both of Wisconsin, had gone to the Missouri farm to collect on a debt

According to court documents, a blood stain found on Nelson's clothing was confirmed by DNA testing to have come from Nick Diemel.

That same piece of clothing contained a spent .30-30 caliber cartridge.

The sheriff's office in North Platte, Nebraska, said the rancher found Justin Diemel's remains mixed with dirt in a plastic tub inside the trailer.

'Upon examination, deputies confirmed the remains were definitely human and noticed personal items in the tub,' according to a statement released earlier this week by Nebraska authorities.

The sheriff's deputies then contacted their counterparts in Missouri who 'confirmed the remains could belong to the homicide victims'.

The Missouri detectives flew to Nebraska to collect the remains.

Lincoln County officials also seized the trailer for possible use as evidence and would work with Missouri authorities as requested.