Glenda “Cookie” Parton.Photo: TSCO

Glenda “Cookie” Parton

An Oklahoma woman who was searching for her missing son and his friend has now also disappeared.

According to Tulsa County Sheriff Vic Regaldo, Glenda “Cookie” Parton was reported missing on Oct. 26 after her car was found abandoned on the side of Highway 75 in Tulsa.

The pair were last heard from on Oct. 22, according to the sheriff’s office. Family members toldlocal station KOKIthe men had plans to attend a horse show in Fort Worth, Texas, but never made it to the show.

When their families hadn’t heard from them, they reported the men missing.

Jack Grimes Dwayne Selby.jpg

The day before her car was found, Parton was captured on video in a Turley business with an unknown man. Investigators were able tolocate the manand interview him.

On Sunday, Regaldo announced during a press conference that investigators had discovered human remains in a wooded area west of Turley. Regaldo confirmed they belonged to Grimes. His manner of death was ruled a homicide.

RELATED ARTICLE:Human Remains Found in Sunken Vehicle Connected to 1998 Missing Persons Case in Arkansas

“Our deepest sympathies are with the family and friends of Jack Grimes,” Regalado said.

“We currently are searching the area where Jack’s remains were found for additional victims.”

Want to keep up with the latest crime coverage? Sign up forPEOPLE’s free True Crime newsletterfor breaking crime news, ongoing trial coverage and details of intriguing unsolved cases.

Regaldo said that investigators have not ruled out foul play in Parton and her son’s disappearances.

Anyone with any information on the pair’s whereabouts is urged to contact the Tulsa County Sheriff’s Office at 918-596-8836 or tips@tcso.org.

source: people.com