David and Carol Keeffe were also shot and killed in the garage of their home last November.
The Keeffe's were also a well known couple where they lived, in Athens Township.
David was an attorney.
State Police say the Keeffe and Colegrove shootings are not related and there's no evidence of a serial killer.
Again, they feel the Colegrove killings are an isolated incident.
As for the Keeffe investigation, State Police say it is on-going.