Floodwaters are hampering emergency officials' efforts to clean up a remote site in northeast Australia where a freight train carrying sulfuric acid came off the tracks.

The train was carrying around 200,000 liters (53,000 gallons) of the highly corrosive acid when it derailed near the small town of Julia Creek in western Queensland state on Sunday. Queensland police say a small amount of acid and diesel fuel spilled and all 26 carriages came off the tracks. Three people were treated for minor injuries.

Police set an exclusion zone of 2 kilometers (1.2 miles) around the derailment site on Monday. But heavy downpours were making clean-up efforts difficult. Flash flooding had cut off access to the highway adjacent to the derailment site.