An explosive device was thrown just before a speech in Wakayama City, where Prime Minister Kishida visited to support the election. Police arrested Ryuji Kimura (24) of Kawanishi City, Hyogo Prefecture, on the spot on suspicion of obstruction of business.

The police authorities believe that there is a possibility of an "iron pipe bomb" and are rushing to analyze the detailed structure. An expert on counterterrorism said, "The fact that the incumbent prime minister was targeted is a very serious incident"