Tackling traffickers: Chemically concealed cocaine

As the global demand for cocaine continues to grow, trafficking gangs are using sophisticated modern chemical processes to move huge quantities of the drug undetected through ports and airports, and across other international borders. In this three-part series Policing Insight’s Chris Dalby looks at how the new techniques are beating traditional detection methods, the expansion of extraction labs across Europe, and what steps police can take to tackle the problem.