Japanese police on Monday arrested a 56-year-old man in connection with two paring knives found at the school desk of Prince Hisahito, grandson of Emperor Akihito, local media reported.
The incident comes as authorities were beefing up security ahead of the popular emperor's abdication on Tuesday after a 30-year reign.
The man, identified as Kaoru Hasegawa, was arrested on suspicion of illegally entering the premises of the junior high school the 12-year-old prince attends on Friday, public broadcaster NHK and other news reports said.
His motive was not immediately clear.
NHK said police officials were questioning him and suspected he placed the knives at the desk, while Nippon Television said he admitted the allegations.
A police spokesman declined to comment.
Hisahito, who began attending the school this month, was not in the classroom when the knives are believed to have been left.
There were no reports of any injuries or damage at the school, while police did not find any ...
