FAYETTEVILLE — It’s been more than two months since deputies found the body of a missing Prairie Grove woman, but investigators still don’t know how she died.

Washington County Coroner Roger Morris said Wednesday that Dana May-Mogg’s official cause of death is listed “undetermined.”

The 51-year-old was reported missing May 21. Her body was found June 26 in the front seat of her 2007 Toyota Corolla, about 800 feet off Buckhorn Camp Road.

Capt. Dallas McClellan said the body, along with other evidence collected from her car, was sent to the Arkansas State Crime Lab to determine the cause of death.

Kelly Cantrell, a spokeswoman from the Washington County Sheriff’s Office, said detectives don’t believe there was any foul play in May-Mogg’s disappearance.

“The toxicology results said that she had two times the lethal limit of pain medication in her system,” Cantrell said.

McClellan said it appeared May-Mogg intentionally drove her car to a secluded area near her home. The car wasn’t wrecked.

Buckhorn Camp Road is 10 to 12 miles south of Prairie Grove.

Morris said he didn’t find any internal or external trauma to May-Mogg’s body.

May-Mogg was last seen between 4 p.m. and 4:30 p.m. May 20 when she left her job at the Veterans Healthcare System of the Ozarks.

Her husband, John May, 71, reported her missing May 21.