Who is Arch Sloan?

Prosecutors announcing on Tuesday what could be the first significant break in years in the Oakland County Child Killer Case, one of the most notorious murder investigations in Southeast Michigan history.

Prosecutor Jessica Cooper is asking for help locating associates of a 70-year old prison inmate who owned a vehicle now linked to the murders of two young people: Mark Stebbins and Timothy King.

The boys were among four children abducted, sexually assaulted and murdered beginning in 1976. The crimes have gone unsolved despite the efforts of various law enforcement efforts for more than 35 years.

During Tuesday's news conference, Cooper said that hairs collected as part of the investigation into the murders of both Mark Stebbins and from Timothy King appeared to have come from the same person. Those hairs were collected from the bodies of both victims and were a key piece of evidence linking the crimes to the same person.

Cooper says a task force dedicated to investigate the crimes also tested hair and fibers collected from a 1966 Pontiac Bonneville once owned by Arch Edward Sloan and determined they matched the hairs collected from both Stebbins and King.

And while that was a significant development, Cooper says by using the latest DNA testing available they were able to determine the hairs collected did not come from Sloan. They believe someone else may have used that vehicle when committing the crime.

So who is Arch Sloan? He is a convicted pedophile serving two life sentences in prison. He was convicted of two counts of first degree criminal sexual conduct in Wayne county back in 1983. He had four prior convictions of sexual assaults against young males including his first offense in 1959. When Sloan was only 18, he was convicted of gross indecency between males.

Click on the video player to hear an interview with Sloan's former neighbor.