Customs officials at Tokyo's Haneda airport intercepted 46.8 kg of stimulant drugs worth ¥3.28 billion in 2013, marking a 3.2-fold increase over 2012, Tokyo Customs' Haneda office said Thursday.
The haul was the biggest since Haneda airport began being used for international flights in October 2010. Haneda, which once served as Japan's main international airport, was used only for domestic flights after Narita airport outside Tokyo opened in 1978.
The amount of stimulants seized at Haneda, the country's busiest airport, stood at 12 kg in 2011 and 14.5 kg in 2012, the office said.
Customs officers at the airport uncovered 15 cases of stimulant smuggling in 2013 and the amount of stimulants, including amphetamines, seized per case came to about 3.1 kg. In 12 of the cases, stimulants were brought from Asia, including India, China and Hong Kong.