“A short time later, a 30-year-old man was arrested and charges are being considered.”
A fire investigator attended the aftermath this morning and tagged the blaze as suspicious.
Firefighters extinguished the flames and have since left the scene.
Timaru District Council is looking into it.
“We’re not sure of the cause at this point but will be making the site safe so there may be some disruption in the immediate area,” said a council spokesperson.