Dean Mulligan told police he believed Marice McGregor was dead after he hit her, but he did not check for a pulse or seek help because he was "scared" it would look like murder.
Mulligan, 43, is on trial in the High Court at Wanganui for the murder of Ms McGregor,
whose body was recovered on May 13 last year from a ravine at what is known as Whiskey Corner off State Highway 4, 50km north of Wanganui.
The Crown alleges Ms McGregor was killed by three blows to the head with an iron bar
Mulligan has pleaded not guilty to murder.
This morning, the jury was played the remaining video footage of Mulligan's interview with Detective David Burmeister, where he made the claim about not seeking help because he was scared.
In the video, Mulligan said he called Ms McGregor's brother about a week later to "get the ball rolling" so she could be found.
He did this out of guilt, he said, even though it was an accident.
He also admitted that it was possible he had made two phone calls to Katrina (a name Ms McGregor also went by) in the week leading up to his call to Ms McGregor's brother, to build a picture of concern for her.
Mulligan said he saw no officially signed will that named him as benefactor, and maintained that he did not enter Ms McGregor's house after her death and take her computers, which were later found to be missing.
Mulligan maintained that he was in the ravine to show Ms McGregor the site for her to grow marijuana plants and that her death was an accident.
The trial continues this afternoon.
