Fire crews around the South Island were kept busy with three large and a number of small fires overnight.
In the first fire, on Bluff Island, a digger and large shed caught alight, about 8.40pm, southern fire communications shift manager Riwai Grace said.
"It took the Bluff and Invercargill fire brigade just over an hour and a half to extinguish that blaze."
Crews were later called to a suspicious workshop and shed blaze in Wakefield, 25km south west of Nelson, about 9.20pm, he said.
Four volunteer brigades responded to the blaze.