Cannabis oil is suspected of causing one of two house fires in Westport last night.
Fire investigators and police are investigating.
The first fire, at 5.30pm, gutted a house in lower Russell Street. The second, at 10.30pm, damaged the kitchen of an Orowaiti Rd property.
Sergeant Malcolm Lamont said the fire call to Orowaiti Rd followed an explosion while cannabis oil was being cooked in the kitchen.
A 61-year-old Westport man had been arrested and charged with manufacturing cannabis oil and possession of cannabis, he said.