Oil theft: A multi-billion dollar business fuels Mexican cartels

Mexico´s notorious drug cartels have thrived off drug trafficking, the arms trade and kidnapping as lucrative sources of revenue for years. But now, more and more cartels are setting their sights on stealing government-owned fuel. In the state of Puebla, cartels have gone as far as bribing farmers into uncovering pipelines in order to siphon off refined oil and sell it for big profit.