TOKYO — A lone attacker rammed a truck into pedestrians, then slashed his way with a survival knife through Sunday shopping crowds in one of Tokyo’s most popular neighborhoods, killing seven people and wounding 10.

Police quoted Tomohiro Kato, 25, as saying he came to the Akihabara district, a canyon of computer and electronics stores, vowing to “kill people.” “I am tired of the world,” the part-time worker in an auto parts plant reportedly told police after his arrest. “Anyone was OK.”

Kato reportedly drove a rented two-ton truck from Susono, about 60 miles south of Tokyo, arriving in Akihabara around noon. The area, renowned as the spiritual center of Japan’s anime and manga culture, is particularly clogged with shoppers on Sundays when its streets are closed to vehicles for what is called “Pedestrian Paradise Day.”