Japan's Prime Minister Fumio Kishida has vowed to boost security as ministers from overseas visit the country, after an apparent smoke bomb was thrown at him.
Ednews informs via BBC that he was evacuated unharmed on Saturday from a public event, with witnesses describing a person throwing an object, followed by smoke and a loud bang.
Japan hosts ministers from the world's seven richest nations, the G7, on Sunday and Mr Kishida said the country must "maximise its efforts" on security.
"At a time when high-ranking officials from all over the world are visiting... Japan as a whole needs to maximise its efforts to ensure security and safety," Mr Kishida told reporters on Sunday.
"It's unforgivable such a violent act was committed during an election campaign," he added.
Also on Sunday, police said a 24-year-old suspect detained at the scene had been carrying a knife and a possible second explosive device.