Soon after Friday's release of the smartphone game "Pokemon Go" in Japan, the craze resulted in numerous traffic accidents and other incidents nationwide, police said Monday.

"Pokemon Go" is an augmented-reality game in which users visit real-life locations in search of virtual creatures that appear superimposed on smartphone screens.

Among the incidents, a 27-year-old man from Chiba Prefecture was arrested for allegedly assaulting a woman in her 20s who was playing "Pokemon Go" near JR Shibuya Station in Tokyo, according to the Metropolitan Police Department.