Police arrested Shunsuke Tamazaki, 32, and Yohei Saito, 21, both Japanese nationals, after officers allegedly found them with marijuana bricks at a checkpoint in the mountain town of Bontoc on 19 March 2004.[1] The haul weighed 1,360 kilograms, an amount for which Philippine drug law provided capital punishment for possession of as little as 500 grams.[1]

The provincial police director said officers were investigating whether the pair planned to transport the marijuana to Japan, and the Japanese Embassy told Philippine police that Japanese customs experts planned to visit to discuss smuggling of illegal drugs from the northern mountain regions to Japan.[1]