Investigators have found human remains inside the car of a woman who disappeared in Arkansas 23 years ago with her child.

Adventures With Purpose, a charity that works to solve cold cases around the nation, found Samantha Jean Hopper’s car in eight feet of water on Tuesday, according to a statement from the Pope County Sheriff’s Office.

The missing report for Hopper was filed on September 11, 1998.Samantha, her daughter, and her blue Ford Tempo were never found, according to the statement. Samantha was reportedly on her way to drop off her daughter Courtney Holt before going on to a performance in Little Rock.

The automobile was discovered eight feet below the surface by the charitable organization.

The human remains in the automobile will be taken to the Arkansas State Crime Lab in Little Rock, according to officials, so that their DNA may be examined.

The Pope County Sheriff’s Office released a statement saying, “We are grateful to have played a small part in helping to bring this 23-year-old case to closure and would like to send our sincere condolences to the family of Samantha Hopper and Courtney Holt.”

Hopper’s daughter Dezarea wrote on a memorial page that her mother was nine months pregnant when she vanished.

Dezarea’s sister was roughly two years old. Dezarea described the discovery of their bodies as a “relief.”