Firefighters are at the scene of a scrub fire east of Nelson tonight.
Southern Fire Communications' shift manager Andrew Norris said 10 firefighters were fighting the fire in the Matai Dam area, 20km east of Nelson.
The fire was a couple of hundred square metres in size, but was not threatening any properties, Norris said.
Another 10 firefighters were on the way to help with the fire, which was at this stage only on the ground, not in the trees.
Paid firefighters from Nelson and volunteers from the Hira, Brightwater and Appleby brigades had been called to help after the alarm was raised at 9.35pm, he said.