DETROIT -

The families of the victims of the Oakland County Child Killer have released photographs of the 1978 suicide scene of a suspect in the case to the Local 4 Defenders.

From February 1976 to March 1977, a serial killer abducted and held four children against their will for several days before killing them, then left their bodies throughout metro Detroit.

The victims, all from homes in Oakland County, were 12-year-old Mark Stebbins, 12-year-old Jill Robinson, 10-year-old Kristine Mihelich and 11-year-old Timothy King.

No one has ever been charged in the more than 30-year-old case.

Christopher Busch, a convicted sex offender, was questioned in the case, but was released.

He later committed suicide.

However, the victims’ families have been vocal about their allegations of his responsibility.

King’s family filed a lawsuit in order for police to turn over their information against Busch.

VIEW:Inside Christopher Busch's home

Chis King, Timothy King's brother, said he thinks Busch was involved because the photos show potential evidence linked to the cases.

One photograph shows a drawing that was pinned on Busch’s wall, which closely resembles Stebbins.

The photographs also show ropes that appear to have blood on them and shotgun shell.

Robinson was killed by a shotgun blast.

"Now we have hard evidence and we expect them to do their job," Chris King said.

The Defenders have also learned that the Michigan State Police are requesting DNA from all living family member of the four victims to make sure all samples are current.

A Grand Jury in Oakland County and a separate Grand Jury in Wayne County is looking at evidence in the case.