His blood-alcohol level, at 133 milligrams, was more than one and a half times the legal limit for an adult.
The friend said that Thomas was a little unsteady on his feet and at one stage during the walk home, he ran out in front of an approaching car and then darted back to the kerb.
Senior constable Simon Burbery, of the Tasman Police Crash Investigation Unit noted that the youths, "clearly intoxicated and unsteady on their feet" were attempting to walk along a highway in complete darkness without any torchlight.
There was adequate room on both sides of the roadway for the pedestrians to move clear of the approaching vehicles and Thomas was moving across the path of the Toyota outside of the approaching driver's direct line of illuminated vision.
Police were satisfied from the scene examination and subsequent inquiries that Thomas's death was caused through his actions and no action was to be taken with respect to the driver of the vehicle.
The coroner said there was nothing in the evidence to suggest that Thomas intended to cause his own death.
- The Greymouth Star