A fire at a major oil refinery in Victoria, Australia, is reportedly affecting the production of high-octane gasoline. Authorities stated that the incident could exacerbate existing fears of petrol shortages amid a global oil crisis.

A fire at one of Australia’s two operating oil refineries could hit petrol production more than diesel and aviation fuel, authorities said on Thursday, as emergency crews worked overnight to extinguish the blaze. Firefighters were battling flames as tall as 60 metres (200 feet) at Viva ‌Energy’s motor petrol production unit at its Geelong refinery in Victoria state, which processes crude into high-octane petrol. No injuries have been reported from the fire, which emergency crews were alerted to....