The Enforcement Branch of Kolkata Police is headed by a Deputy Commissioner (DC). The main functions of this unit are detection and prevention of commercial crimes and enforcement of control laws and orders relating to essential commodities, as well as the detection and prevention of circulation of spurious drugs, adulteration of foodstuff and movement of smuggled goods. The EB also prevents the evasion of taxes and duties and prosecutes offenders, while EB officers regularly conduct drives against faulty weights and measures used by unscrupulous traders.