A large recycling fire fuelled by plastic in Waiuku overnight is being treated by police as suspicious.
Fire and Emergency New Zealand (FENZ) was called to the rubbish fire south-west of Auckland just before 11pm.
Shortly after 10am today FENZ confirmed the fire was out and would soon be handed back to the owners.
Specialist investigators and police would work to determine the cause.
“If you are in the vicinity, it is now safe to open doors and windows and go outside without a mask.”
Earlier, police said they were treating it as suspicious.
In an update shortly before 8.30am, a police spokesperson confirmed inquires were being made at the commercial address on Kitchener Rd, and a scene examination was due to be carried out later today.
“There are no reports of injury and a scene guard remains in place,” they said.
Anyone with information was encouraged to report this to police online, through 105 or anonymously via Crime Stoppers on 0800 555 111.
At its peak there were around 60 firefighters at the scene from 16 trucks.

Watercare said the fire response had drained the local reservoir that supplied drinking water to the area and urged residents to avoid using unnecessary water.
“The reservoir is currently sitting at 3% full and we have four tankers working to refill the reservoir. Until we can get it back to the normal level, please refrain from using unnecessary water where you can – running the dishwasher, washing machine and try to keep your showers short.”
Road closures
Footage taken from Neil’s Auto Centre, next to the recycling plant, showed flames and large plumes of black smoke. (Source: Supplied)
In a post to social media, Waiuku Volunteer Fire Brigade said several roads would remain closed until further notice including Kitchener Rd between Racecourse Rd and Queen Street.
It also said there was no access to View Rd from Kitchener Rd, and that traffic trying to enter Kitchener Rd from King Street would be diverted up Queen Street and through the detours.
“Please stay clear of the area and follow any instructions from firefighters, police, or other personnel on scene,” it said.

