Redding police Sgt. Al Mellon on Wednesday said investigators sent material to the California Department of Justice DNA lab for testing, and hope it will help them identify a suspect into the 1976 slaying of 15-year-old Terri Lynn Ray.
Ray was stabbed multiple times, her body found near a creek off Highway 273.
The case took an odd turn in 1976, when police arrested an 18-year-old girl on suspicion of the murder after she confessed under hypnosis, Mellon said.
The girl was later freed from Shasta County Jail after a judge threw out the hypnosis-induced confession and police learned she had an alibi.