video emerged of japanese man on board after knife attacks in Tokyo

Seventeen wounded in knife attacks at Japan metro in Tokyo. The attacker was reportedly tried to set one of the wagons on fire with lighter fluid after the attack. The attacker was identified to be a 24-year-old Japanese man named Kyota Hattori. Video emerged after attacks shows that Hattori wears a purple suit and green shirt imitating the villain of Joker in Batman series. He confessed that he was influenced by the Joker in his statement to the police. The culprit said he wanted to kill people in order to be sentenced to death, and that he was impressed by the knife attacks in August in the country.