Authorities identified a decomposed body found in Dyersburg to be Karen Swift, a mother of four who went missing in late October in rural western Tennessee.

Tennessee Bureau of Investigation Special Agent John Mehr told CNN the body discovered on Saturday near Highway 78 was that of 44-year-old Swift after an autopsy was conducted.

Authorities said the death of Swift is being ruled as a homicide and the investigation will continue.

Swift was last seen picking her daughter up after attending a Halloween party around 1:30 a.m. on Oct. 30, according to the Dyer County Sheriff's Office. After returning home, the daughter noticed her mother was missing around 6 a.m.

My sister, she remembers her mom picking her up and putting her in bed with her little sister, her son Preston Swift said.

The body was found on Saturday near her car, a 2004 white Nissan Murano with a flat tire, within miles of her home.

Frost and winter conditions killed the vegetation, making the body visible within a few feet, Dyer County Sheriff Jeff Box told My Fox Memphis.

KAIT reported on Saturday, the area was blocked off while the Dyer County sheriff's deputies, the Tennessee Bureau of Investigation and the Attorney General investigated.

Box said the body would be identified at the Regional Forensic Center in Memphis based on dental records.

Swift's disappearance prompted a nationwide search, which included her brother's, Jeffrey Johnson, appearance on Nancy Grace on Nov. 21.

Karen Swift leaves behind four children and husband David Swift.

It's very emotional for Mr. Swift and the family, Swift's family lawyer Timothy Naifeh said in a statement. They're asking at least for this period of time to have some privacy -- it's time for grieving and it's time for mourning. It's heartbreaking and it's very, very sad.