The court in the western city of Wakayama found that the man intended to kill Kishida and others on April 15, 2023 he threw a homemade bomb at the then premier.
This happened when Kishida was prepared to give a speech in support of a candidate of his Liberal Democratic Party (LDP) in local elections.
Kishida was unharmed by the explosion, which slightly injured a police officer and a bystander.