It happened on Whithorne Drive, off Woods Creek Drive on Thursday.
Sgt. Chris Clayton said a 911 call came in around 10:30 a.m. from a man who very calmly said he wanted to confess a murder that happened "about five minutes ago." After the operator told him to hold, the call was disconected.
The call led police to the Whithorne Drive address.
When officers arrived, they couldn't get anyone inside the home to answer the door, so after getting more backup, they made entry. Inside, they found the bodies of a man and a woman.
The dead were identified as husband and wife Daniel Jonathan Powell, 52, and Doreen Kay Powell, 46. Neighbors said they were shocked at the news.
"They were a perfect match," neighbor David Low said. "I thought they always got along good, seemed to be real happy. They were just great people. I'd be shoveling snow, she came out and help me."
Police said Doreen Powell had both knife and gun wounds. Daniel Powell apparently died of a single gunshot wound to the head. Autopsies were planned at the Office of the State Medical Examiner in Chapel Hill.
Police said they had been called to the couple's home four time in the past, but not for any kind of domestic violence complaints. The last call was for an animal complaint.
Daniel Powell had no criminal record.
The Powells were both employees of the Unites State Postal Service.
The Powell's were letter carriers at the South Raleigh Station, which is part of the Raleigh Post Office. Doreen was employed with the Postal Service since 1999, while Daniel worked with USPS since 1995.
"The U. S. Postal Service, and especially the Raleigh Post Office, are tremendously saddened by the loss of two members of our "postal family", Doreen and Daniel Powell," U. S. Postal Service District Communications Coordinator Carl A. Walton said. "Our deepest condolences, thoughts and prayers from us go out to their family, friends, loved ones and colleagues following this tremendous loss."