Drug dealers have been using storage lockers to sell cocaine, police said yesterday after arresting three men and seizing 2kg of cocaine from a locker in a Sha Tin mall. After receiving a tip-off, Narcotics Bureau officers mounted an ambush operation in New Town Plaza yesterday. At about 1.45pm, a 31-year-old man, believed to be the buyer, opened a locker and took out a paper bag, which officers found contained two well-packed cubes of cocaine. The suspected buyer was arrested and two other men, aged 32 and 30, whom police believed were traffickers, were arrested in the mall's car park. Chief Inspector Anthony Wong Yiu-wing said each cube of cocaine weighed about 1kg and could have been sold for more than HK$1.6 million. He said the drugs could have been smuggled into the city from the mainland and were believed to have been destined for distribution via the city's entertainment parlours. 'It is the first time we have discovered such trafficking tactics,' Chief Inspector Wong said. 'The cocaine cubes were packed in plastic covers and placed in jelly boxes in the locker. The buyer was given the password of the locker to get the drugs himself.' Police and Customs officers seized 38kg of cocaine in the first six months of this year, virtually unchanged from the same period last year.