The confessed killer of popular Mullumbimby motorised-bicycle manufacturer John Foss has told the Supreme Court he was mentally ill at the time he ran over Mr Foss in his van.
James Andrew Mitchell, 54, had already pleaded guilty to deliberately running over Mr Foss on his bicycle on Coolamon Scenic Drive on January 3 this year.
Police said the two were known to each other and that there was some animosity between them at the time of the killing.
Chris Bruce, barrister for Mr Mitchell, successfully convinced Justice Elizabeth Fullerton that his client was suffering from a mental illness at the time of the attack.
The judgment is expected to be handed down tomorrow.