WARNING: Video contains disturbing images. Viewer discretion is advised.

One man was in critical condition and more than 10 others injured in a knife and arson attack on a major Tokyo train line on Sunday evening, Japanese media reported, as many party-goers headed into the city centre for Halloween gatherings.

Police arrested the suspect, a 24-year-old man dressed in Batman's Joker costume, media reported.

Video uploaded to Twitter showed a stream of people running away from a train car where, seconds later, a small explosion caused a fire. Passengers climbed out of the train's windows and onto the platform where the vehicle had made an emergency stop.

The attack occurred on the Keio line bound for Shinjuku, the world's busiest rail station, at around 8 p.m. (1100 GMT), media said.

For more info, please go to https://globalnews.ca/news/8338761/tokyo-train-knife-stabbing-fire/

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