The incident in Wakayama City in which explosives were thrown near Prime Minister Kishida, who was visiting to support the election, occurred on the 22nd, one week after the incident. When the police analyzed the suspect's computer, they found that he had a history of repeatedly browsing the LDP website. Police are investigating the circumstances of the attack, believing that they were looking for an opportunity to attack while checking the dates of election speeches on the Internet.

On May 15, a cylindrical explosive was thrown near Prime Minister Kishida, who was visiting a fishing port to support a by-election for the House of Representatives, injuring two people, and police arrested Ryuji Kimura (2), an unemployed man from Kawanishi City, Hyogo Prefecture, on suspicion of obstruction of business by force, and are investigating the details of the incident.

According to those involved in the investigation, when the police analyzed the computer seized from the suspect's home, they found that they had repeatedly browsed the LDP website.

According to the Liberal Democratic Party, the date and time of the speech at the fishing port was announced on the 14th, the day before the incident, and was posted on the party's website shortly after 5 p.m.

It was the first time in nine months since the House of Councillors election election last summer that Prime Minister Kishida gave a speech in support of the election in the streets.

As a result, police believe that the suspect who prepared the explosives was checking the dates of his election speeches on the Internet and looking for an opportunity to attack, and are investigating the circumstances of the attack.