LOCUST GROVE — An increase in reward money has generated several new leads in a year-old Cherokee County slaying, the Oklahoma State Bureau of Investigation reports.

Elaine and Jack Denney were found shot to death on Christmas Day 2007. An increase in reward money has generated several new leads.

Jack Denney, 65, and Elaine Denney, 66, were found shot to death at their rural home near the Cherokee-Mayes County line on Christmas Day 2007.

It is believed the couple were killed on Dec. 23. Both had been shot multiple times in the head and torso.

“It’s not a cold case — the case is still active and we got some pretty good leads a couple of weeks ago,” said Stan Florence, OSBI inspector. “I’m not sure they are going to pan out but they are still new leads.”

The agency has interviewed 75 people and given two polygraph tests, but no suspects or a clear motive for the crime have emerged in the year since the couple were gunned down.

Florence said the two people given the polygraph tests have been cleared.

Earlier this month, the OSBI offered a $5,000 reward for information leading to the arrest and conviction of whoever is responsible. This is in addition to $5,000 offered by the couple’s friends.

At the time of the slaying, local authorities said there were several burglaries in their area.