A key oil asset once owned by BP in the country, Zuva Petroleum sold fuel contaminated with water to unsuspecting motorists.
Officials at the firm which has countless stations across the country admitted selling contaminated petrol.
A few months ago, several leading fuel retailers in Zimbabwe, purportedly partly owned by Swiss companies, were accused of importing contaminated diesel which contains high levels of sulphur content for bigger profits.
In an investigation report titled How Swiss Traders Flood Africa with Toxic Fuels, a Swiss corporate watchdog, Public Eye accuses leading fuel companies of importing toxic fuel.
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