Knox County Sheriff's Office investigators say a Knoxville woman, whose body was found along a road in 1975, was likely the victim of a serial killer, who may have had 90 victims.
Martha Cunningham's death was considered to be from natural causes at the time, according to KCSO.
However, investigators now think Cunningham is one of dozens of murder victims that Samuel Little has described, according to KCSO.
The Knoxville mother's body was found in a wooded area in eastern Knox County in 1975, according to KCSO.
FBI experts say Little may prove to be one of the most prolific serial killers in U.S. history.