In the tape, 44-year-old Christopher Moyer can be heard talking with a 911 operator about the murder of his wife and 7-year-old son.
911 Operator: Okay, can you tell me about what's going on there?
Christopher: Uh, a mother and son, uh, bludgeoned to death.
911: And you just found that?
911: Ok, who are you?
Christopher: I'm the husband.
As the conversation continues, Christopher is asked if he was responsible for the killings.
911: Did you do it?
Christopher: Yes, I did.
911: What's your name, sir?
911: Last name?
It was Friday night, when this call took place.
Police responded to 167 Red Stone Drive where they found the bodies of Christopher's wife Irina, also known as Elizabeth, and their son, Dillon.
Bucks County District Attorney David Heckler said both victims were found in or near their bedrooms and a bloody baseball bat was nearby, but there was no evidence of a defensive struggle.
"This seems to be a situation where he may have struck these people while they were sleeping. We don't know," Heckler said.
As for Christopher, he was found dead on nearby railroad tracks after an apparent suicide.
Neighbors described Irina as sweet, polite, quiet and a doting mother. Dillon had just finished first grade.
Christopher was a computer specialist, a freelancer who worked from home. He was described by some neighbors as socially awkward.
Though investigators are still unsure about a motive, they say there are indications the family was dealing with financial issues.
Reports indicate the state had placed a lien on the Moyer's home last September and the family had avoided foreclosure in 2006 when they settled a federal lien.