The devastating scrub fire near Queenstown which cut power to hundreds of homes and claimed 150ha of native scrub was likely caused by a campfire, authorities have found.
The Otago Regional Fire Authority (ORFA), aided by the police, have begun the investigation into the cause of yesterday's blaze at Rat Point.
Power and road access to Glenorchy was cut off while the fire was brought under control.
After an initial investigation on scene this morning fire staff are confident that it was started by a campfire on the beach below Rat Point.
ORFA asked anyone with information about the fire to call them on 0800 673 473, or contact the police.
Of particular interest to investigators was information or sightings of a white van that was seen at Rat Point on the afternoon of Tuesday January 10.
Those responsible may have already left the scene on Tuesday evening, thinking that their campfire was out, before wind blew hot embers into the surrounding dry vegetation and started the scrub fire.