Many families still wonder what happened to missing relatives, even if they haven't heard any news for 42 years. 

One missing relative could be the man whose body was found shot and partially burned Aug. 1, 1978, at Poole Knob Campground near La Vergne, said Rutherford County Sheriff's Detective Richard Brinkley.

“There's a mother, father, sister, brother or child who still seeks closure,” said Brinkley, who was assigned the case in May.

Brinkley is still trying to identify the suspects who killed the unidentified man while focusing on the identity of the victim.

RELATED: Do you know La Vergne's John Doe?

An autopsy report described the unidentified man as being in his late 30s who was 5-feet-10 tall. He had long, brown hair with a receding hairline and a reddish brown and gray beard.

Some unique features include: 

• Scars on his stomach, possibly from a surgery on his aorta using a Dacron graft, a material to replace or repair his blood vessels.

• No natural teeth with upper dentures about five to 10 years old. The dentures were believed to be “bootlegged” with “Solila-Vac” teeth.

• A quarter-sized mole 2 inches near his waistline.

A Tennessee Bureau of Investigation agent prepared a sketch of the missing man.

Family members of missing men who believe the information matches a relative or information about suspects may contact Brinkley at 615-904-3045 or at rbrinkley@rcsotn.org. 

The investigation began after a campground custodian found the burned body and notified the Sheriff's Office in the morning of Aug. 1, 1978.

Sheriff's detectives and Tennessee Bureau of Investigation agents launched the investigation with few clues. 

They believe the man was killed somewhere else and his body dragged to the site where he was burned. 

Through the years, detectives tried to identify the man through contact nationwide with other law enforcement agencies, his fingerprints with FBI and DNA from families who believed he could be a missing relative. Those tests have been negative. 

Detective Sgt. Dan Goodwin and former Detective Steve Kohler took over the investigation in 2014. They talked to possible witnesses.

Kohler talked with the original TBI agents who worked the case and enlisted a TBI agents to do a sketch on the missing man. The sketch was released during media interviews in 2014.

The Sheriff's Office obtained a skull reconstruction.

Kohler worked with Dr. Lee Meadows Jantz from the state Forensic Anthropology Center who said the man's DNA was submitted to the FBI's Combined DNA Index System to search for a match. No results have been found. 

Dr. Jantz reported a profile of the unidentified man was added to the National Missing and Unidentified Persons System. 

NAMUS reported 600,000 people are reported missing every year. Of that number, 4,400 bodies are recovered each year and 1,000 remain unidentified after one year.

People may view the man's profile at https://www.namus.gov/UnidentifiedPersons/Case#/1585?nav. 

Also, Dr. Jantz guided Kohler to seek help from the University of North Texas' DNA lab. 

Brinkley is working with the University of North Texas and other DNA sources to help find the man's identity.

“We haven't given up,” Brinkley said. “Somebody knows who he is.”