Fire crews battle overnight brewery blaze in Matakana

Firefighters continue to monitor a building north of Auckland after a late night fire at a local brewery.

Fire crews were called to The Sawmill Brewery, in Matakana, just before 11pm.

A northern fire communications spokesman said crews worked for about two hours putting out the fire - which started in the roof.

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No one was injured and there were no suggestions of any structural damage, he said.

Firefighters remain at the site this morning to monitor for any flare-ups.

Meanwhile, fire crews in the South Island were also kept busy at a large vegetation fire at Wanaka's Diamond Lake.

Firefighters were called to the blaze just before 9.30pm.

Four pumps and four tankers were brought in to help douse the blaze and a pump and rural fire officer remained at the scene all night.

A Fire and Emergency NZ spokesman said a flyover will be done at first light to determine exactly how big the fire is and what the next steps should be.