Building fire in Auckland's North Shore under investigation

A fire at a building in Auckland's North Shore will be investigated today, Fire and Emergency (FENZ) confirmed.

At 8:55pm on Thursday, approximately 25 firefighters were at the scene of a large fire in Wairau Valley.

A video supplied to Newshub showed thick smoke billowing from a building and rising into the air. Large flames could also be seen coming from the building.

There were no injuries from the blaze. 

On Friday morning, a FENZ spokesperson said the fire has been extinguished and firefighters left the scene at around 3:30am.

The spokesperson said fire investigators will be looking into the cause of the fire.