Margarine factory fire causes $1m damage

A fire at a margarine factory in Western Australia's south has caused an estimated $1 million worth of damage.

The Department of Fire and Emergency Services said 24 firefighters battled to extinguish the blaze at the disused canola oil processing plant in Bunbury, which is being used as a storage facility.

The fire broke out just after 3am.

The cause is unknown but considered not suspicious.