WAKAYAMA -- Steel pipes and what appears to be gunpowder were seized Sunday from the home of 24-year-old Ryuji Kimura, who was arrested a day earlier after allegedly throwing an explosive device in the area where Prime Minister Fumio Kishida was about to give a campaign speech, according to the Wakayama prefectural police.
Sources with the police said that Kimura was holding another cylindrical object and a lighter at the scene, where he was arrested on suspicion of forcible obstruction of business.
Police believe that he had made at least two explosive devices. From early Sunday morning, they searched his home in Kawanishi, Hyogo Prefecture, and seized a powdery substance believed to be used to make gunpowder, steel pipes and a variety of tools.