Thirteen people were hurt Friday when a man with a knife attacked children on two buses in Japan's Ibaraki prefecture near Tokyo, media reports said, citing police.
A 27-year-old unemployed man was arrested at the scene of the stabbings near the railway station in the town of Toride, dpa reported.
Four people were reportedly stabbed with a kitchen knife during the morning rush hour, and the rest were injured trying to escape.
Thirteen people, including 11 schoolchildren, suffered mostly minor injuries. One person was seriously hurt.
There were no immediate reports on the possible motive behind the attack.