Out of a total 63 incidents of narcotics detection and seizure at airports in the country in 2013, fifty-nine were reported from these air facilities, one of the largest hubs in terms of passenger and cargo load.
Only six per cent of cases were detected at the airports of Guwahati, Bangalore and Madurai.
While Delhi's Indira Gandhi International Airport reported a total of 17 drugs seizure cases during the said period, the Chennai airport had 16 such instances while Kolkata and Mumbai airports registered 13 such instances each during 2013.
Two instances of narcotics seizure were detected at the Guwahati airport while one each was reported from Bangalore and Madurai during the same period.
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Over 1,026 kilograms of narcotics-- including Ketamine, Ganja, Heroin, Ephedrine and Pseudoephedrine-- were seized from these air facilities during the year leading to the arrest of 75 people under the provisions of the Narcotic Drugs and Psychotropic Substances (NDPS) Act, the data said.
The NCB, while enforcing anti-narcotics enforcement measures at airports, takes the help of airport security force CISF and Customs to nab couriers and effect seizures.