A trade ministry official who was arrested last month on suspicion of attempting to smuggle a stimulant from the United States may have used drugs at his workplace, an investigative source said Thursday.Several syringes were seized during a recent raid from the desk of Tetsuya Nishida, 28, deputy director of the Economy, Trade and Industry Ministry's automobile division, and police are now investigating whether he used stimulants at the office, the source said.The police arrested the career-track bureaucrat on April 27 at his Tokyo home as he received a dummy package, the original of which …READ FULL ARTICLE