A Russian hiker was seriously injured in a bear attack near Mount Sanukido in Tokyo, fueling concerns that Japan may be headed for another record year of human-bear encounters.

A Russian hiker was seriously injured in the mountainous west of Tokyo on Sunday morning, raising fears that Japan could be heading for another record year of human-bear encounters. Police said a bear attacked the man as he was hiking along a forest road near Mount Sanukido, close to the town of Okutama. The man, who has not been named, sustained severe injuries to his face and arms and was airlifted by helicopter to a hospital in Hachioji city. His injuries were not life-threatening. The attack...