40 firefighters and nine fire trucks battle blaze

At its peak, about 40 firefighters and nine fire trucks were actively fighting the fire, although this number has now reduced.

Fire and Emergency will continue today to fully extinguish the fire at a palm kernel storage facility in Lake St, Invercargill.

The fire is largely contained, however hotspots remain in the palm kernel inside the building.

Two crews remain on site to dampen down the hotspots. At the fire's peak last night, nine trucks and a Command Unit were on the scene to fight the fire.

Fire and Emergency will work with the building owner to bring in heavy machinery this morning to start safely clearing the palm kernel.

State Highway 1 has been re-opened to traffic.

The fire was largely contained to the 50m x 30m building.

At its peak, about 40 firefighters and nine fire trucks were actively fighting the fire, although this number has now reduced. 

Fire and Emergency Incident Controller Julian Tohiariki said crews remained on the scene throughout the night to ensure the fire remains contained, before efforts to remove any remaining fire fuels inside the building are made in the morning.

"People may [have seen] smoke coming from the area, and we want to let people in the path of the smoke plume know that it is not toxic - it is similar to the smoke from a vegetation fire," Tohiariki said.