A pre-trial hearing for the man accused of killing former Prime Minister Shinzo Abe was cancelled Monday after a suspicious object was delivered to the court, local media said.

Tetsuya Yamagami had been due to appear on Monday afternoon for his first pretrial hearing at the Nara District Court over Abe's broad-daylight assassination, which shocked the world in July last year.

But the site was evacuated after what appeared to be an "unidentified bag" was delivered to the court, NHK said, citing investigative sources. Similar reports were carried by other Japanese media outlets.