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Her husband, Lynn Keel, was questioned overnight but has since been released.
Investigators were back at their home on Old County Home Road in Nashville Wednesday afternoon.
The 38-year-old mother was first reported missing by her daughter on March 7.
Chief Deputy Brandon Medina, of Nash Co. Sheriff’s Office, says they’ll be attending an autopsy at a medical center in Greenville. “We’ll get a blood sample. We’ll get some fingerprints. Those items will aid us in identifying the female that was located in Edgecombe Co.” #ABC11 pic.twitter.com/kZp92koQTz— Gloria Rodriguez (@GloriaABC11) March 13, 2019
Deputies said an NCDOT worker found a body around noon Tuesday in the woods in Edgecombe County two to three miles outside of Leggett on Polk's Hole Road.
Nash County Sheriff Keith Stone said in a news conference that the body was decomposed and he suspected foul play was involved.
Nash County deputies went to their home on Saturday night after her husband, Lynn told them he'd last seen her Friday.
#BREAKING—Nash County Sheriff’s Office tells me they found a body they believe belongs to Diana Keel but it has not been confirmed. They will be talking to her husband but he is not under arrest. #ABC11— Gloria Rodriguez (@GloriaABC11) March 12, 2019
Stone said there had been a domestic issue between Diana and her husband about a year ago.
"There had been concerns between the husband at one time and Mrs. Keel but there has been nothing lately that has been reported on that," he said.
Diana's employer told investigators she had not reported to work in several days.
"She worked as an emergency room nurse. She stayed in contact with her family, stayed in contact with her work. She didn't miss work, and she's not been heard of or seen anywhere since the 7th," Stone said.
Her car is still parked at the home.
Stone said Diana's husband told them she left with some acquaintances and hasn't returned.
.@NashCountySO says Alejandra Keel was last seen by her husband on Friday. Deputies remain outside her home on Old County Home Rd after checking when her employer said she didn’t come in for work for a few days. @ABC11_WTVD #ABC11 pic.twitter.com/QwQOTjPnRb— Anthony Wilson (@AnthonyABC11) March 12, 2019
"There's been no use of her cell phone. We've reached out, tried to call her several times and can't get anything," Stone said.
Diana's mother, Esperanza Prada, spoke to ABC11 on Tuesday via telephone from her home in Colombia.
"I am afraid for my daughter," Prada said. "I want my daughter to appear."
Investigators said Diana's husband told them she's left before, and he still expected her to be back.
"Years ago, my daughter wanted to separate from (her husband) but she couldn't because he threatened her," Prada said.
Diana's mother told ABC11 that Diana had planned to divorce her husband and had already met with an attorney about it.
In January of 2006, Lynn's previous wife, Elizabeth Bess Edwards Keel, died at the same home. At the time, the medical examiner declared the death accidental, based on the blunt trauma to the head. The sheriff's office said it was reported that Elizabeth fell and struck her forehead on the corner of the front concrete steps.
Stone said deputies have notified Diana's oldest daughter, who is in college, about the discovery. Diane's other child is a 10-year-old boy and deputies said the child is safe with a grandparent.