BEAUFORT CO., SC (WTOC) - Isaiah Gadson Jr. was arrested Wednesday after being linked to a 1980 murder and sexual assault.
On January 5, 1980, a girl and her 18-year-old boyfriend, David Krulewicz, were parked in a car on a dirt road when an unknown male approached and fired several gunshots into their car, killing Krulewicz.
After the shooting, the female victim said she was robbed, then sexually assaulted. When the attack was over, Gadson walked off and got away with his crime, at least up until Wednesday.
Beaufort County Sheriff's Office investigators looked into the incident for many years until it eventually grew cold, due to limited forensic technology at the time and the shooter's identity remaining unknown.
Since forensic technology has improved, evidence collected from the sexual examination of the female victim were resubmitted to the South Carolina Law Enforcement Division Forensic Services laboratory by Sheriff's Office Cold Case investigators.
A DNA profile was developed then plugged into the Combined DNA Index System in 2003 by SLED analysts. There was no immediate match through searches against known offenders already in the database.
"I think we'd all pretty much given hope that this would be resolved because it's been so long and of course, when it happened, we didn't know what forensic evidence was taken. You think well maybe this person has passed away or moved away or whatever," said Diane Larsen, sister of the victim.
On August 2, 2016, SLED DNA analysts found a match to a 63-year-old man.
Gadson Jr.'s DNA was collected at the Beaufort County Detention Center following his arrest in an unrelated incident in June of 2016.
Once his DNA profile was uploaded to CODIS, it was quickly matched to the 1980 case. After making the match, interviews of original witnesses were conducted.
On August 9, Sheriff's Office Cold Case Investigators obtained warrants for the arrest of Isaiah Gadson Jr. for murder, criminal sexual conduct 1st degree, kidnapping and armed robbery. They arrested him early Wednesday afternoon.
Gadson Jr. will be moved to the Beaufort County Detention Center.