A man has been taken to hospital in a serious condition after an oil explosion at a workplace near Levin.
Emergency services rushed to the scene - in Ōhau, about 7km south of Levin - after being called at about 8.07am.
A St John spokeswoman said one patient was taken to Wellington Hospital in a serious condition as a result of the incident.
They were transported by a St John helicopter, she said.
Two ambulances were also sent to the scene.