AUBURN – Jurors listened Friday to a tape of Scott Poirier confessing to fatally shooting his father, who he said had molested him when he was a teenager.

Poirier’s voice was captured on a recording during an interview with a Maine State Police detective at the Lewiston police station on Nov. 8, 2006, the night of the shooting.

The jury at Androscoggin County Superior Court listened to a CD of the recording as they followed along on a transcript on the third day of Poirier’s murder trial.

“You guys already know that I (expletive) put a bullet right through my (expletive) father’s throat,” Poirier, 35, said early in the interview.

Later, he was asked to sketch the scene of the shooting. On Detective Mark Lopez’s notepad, Poirier penned his parents house then showed where he stood behind the house by the pool and took aim through the window of French doors at his father who sat at the head of the dining table during his 65th birthday party.

“Picnic table – fence line – house – window – standing – bang,” he said, quickly drawing a straight line from the spot where he stood to where his father had sat.

He said he drove from his home in Sabattus to his parents’ Grove Street house in Lewiston. He said he specifically brought his .270-caliber Browning semiautomatic hunting rifle with him for the purpose of shooting his father.

After the shooting, he considered fleeing, but police had come to the house.

“I turned, I walked, I thought about (expletive) running in the woods … (expletive) kind of cops are there. I heard and I just said, phfff, busted.”

He said he put the gun on the ground outside his sister’s house next door and walked up and confessed to a Lewiston police officer, who was standing outside his parents’ house.

He told Lopez the alcohol he drank earlier in the day made it easier to kill his father, but said he had been contemplating taking that action.

Asked whether he was afraid of his father, described by a medical examiner as 5 feet 10 inches and 291 pounds, Poirier said he wasn’t.

Earlier in the day, Deputy Chief Medical Examiner Margaret DeWitt described the “large gaping” wound in Roland “Jerry” Poirier’s throat. The bullet severed all the blood vessels that carried blood to and from the head. The path of the bullet ended at the shoulder blade, she said. He died from blood loss, she said.

Police testified that they found a single spent shell casing outside the house by the pool, where Poirier later said he stood with the rifle.

Poirier told Lopez he only fired one shot.

A psychiatrist who examined the Poirier for the state after the shooting testified Thursday that the defendant said he couldn’t recall details of the shooting. But she also reviewed police reports, including the interview with Lopez, during which he recounted the events.

The state must prove beyond a reasonable doubt that Poirier intentionally or knowingly caused his father’s death.

Defense attorney Steven Peterson hopes to show his client was not criminally responsible for the fatal shooting by calling into question his state of mind when he pulled the trigger.

Poirier was described Thursday by psychiatrist Dr. Diane Schetky as depressed, suicidal, drug- and alcohol-dependent and displaying symptoms of post-traumatic stress disorder. But she said she believed he acted with purpose and knew what he was doing when he fired his rifle.

A Maine State Crime Lab worker testified that the Bushnell Trophy Scope attached to the rifle had an adjustment for short- and long-range sighting. It was set on short range. Police said the distance from where Poirier likely stood to where his father sat measured about 24 feet.

While lab worker Kimberly Stevens couldn’t say the bullet was fired from Poirier’s rifle, she did say the spent casing found behind the house had been chambered at one time in that gun. Police also found live rounds in his pickup truck parked in front of his sister’s house.