An autopsy performed on an elderly Kidder Township couple, who were found dead in their home on Saturday, showed they died of traumatic injuries that included being struck and stabbed.

Carbon County Coroner Bruce Nalesnik reported that an autopsy performed Monday at the Lehigh Valley Hospital, Salisbury Township, reveal John Carnochan, 77, died of multiple blunt force trauma to the head and stab wounds to the chest. His wife, Mildred Carnochan, 75, died of multiple blunt force and sharp force trauma to the head and chest.

Nalesnik said the two died when they apparently were attacked, but suffered different types of injuries. He added that the wounds suffered by the two were probably caused by a hammer or similar object and a knife. He estimated the knife had a blade between four and six inches long.

Nalesnik said it is estimated that the two were dead between 24 and 36 hours before they were found.

The couple was found by Kidder Township police about noon at their home at 33 Wolf Hollow Drive, in Split Rock Resort, Lake Harmony.

Several hours later Mrs. Carnochan's grandson, Gregory Demage, 30, of 1025 Center St., Jim Thorpe, shot himself to death in the couple's car when confronted by police along SR61 in Coal Township, near Shamokin, in Northumberland County.

State police at Stonington were alerted by state police at Fern Ridge, who are investigating the deaths of the couple, to be on the lookout for the couples' 2006 Cadillac DTS sedan, which was missing when the bodies were found.

Troopers spotted the car along Snydertown Road and attempted to stop it. The vehicle sped off eluding troopers. About 20 minutes later it was spotted by Ralpho Township police, who pursued it for about nine miles before the driver, later identified as Demage, stopped in Coal Township.

After a brief standoff, Demage shot himself to death in the vehicle.

It was learned that Demage may have gone to the Coal Township area looking for a former girlfriend.

Fern Ridge troopers had learned that Demage had possible ties to the Snydertown area through an ex-girlfriend living there, and that was the reason they alerted Stonington troopers.

Demage was a person of interest in the death of the Carnochan's.

State police at Stonington told the Shamokin News-Item that the ex-girlfriend once lived in Snydertown, but was not living there as of Saturday.

The location where Demage took his life is about 70 miles from Lake Harmony. Troopers said they believe that Demage did not make contact with anyone in the Snydertown area as he was spotted by them before he reached the home in Snydertown where the ex-girlfriend once lived.

An autopsy on Demage was scheduled for today, also at the Lehigh Valley Hospital. Nalesnik said that Northumberland officials identified Demage from tattoos that were described to be on him from family members.

The autopsy on Demage will also include toxicology testing, it was reported.

The investigation into the incident is continuing and no motive has been given by troopers for the murder of the couple.

Kidder police went to the home around noon to check on the welfare of the couple. Demage was spotted about 8 p.m. when he fled troopers.