Iran Press/ Asia: A 24-year-old man dressed in Batman's Joker costume attacked passengers on a Tokyo train line on Sunday evening, injuring about ten people as many party-goers headed into the city center for Halloween gatherings.
A man in his 60s was unconscious in critical condition after being stabbed, while witnesses also said the attacker had spread fluid around the train and started a fire, according to an NHK report.
Tokyo's Metropolitan Police Department received an emergency call that the man was swinging a knife at the Keio express line, one of Japan's and the world's busiest rail stations, at around 8 p.m. (1100 GMT).
Partial service on the Keio line remained suspended late Sunday when Japanese voters went to the polls in a lower house election.
Video broadcast on NHK showed a steady stream of people running away from a train where, seconds later, a small explosion caused a fire. Another video showed passengers rushing to squeeze out of the train's windows and onto the platform where the train had made an emergency stop.
In August, nine people were wounded, one of them seriously, in a stabbing attack on a commuter train in Tokyo, with the suspect later handing himself in after fleeing the scene.
In a separate attack in August, two people suffered burns in an acid attack at a Tokyo subway station.
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