Police said Wednesday that a woman jumped from a platform into the path of an express train in Tokyo's Katsushika Ward on Tuesday morning, killing herself and injuring four bystanders.

Police say although there were no eyewitnesses to the incident, the events were captured by a station security camera.

According to investigators, the woman, believed to have been aged in her 40s or 50s, was standing on the third platform at Shin-Koiwa Station at around 10:00 a.m. She then moved to the edge of the platform as the Narita Express airport service approached, on schedule, at 10:04 a.m. and threw herself in front of the train, which was travelling at around 110 kph.

According to investigators, her body was hit by the front car and then propelled five meters, through the glass door of a station shop that was situated on the platform. Four shoppers sustained minor injuries in the incident. Police are currently trying to identify the deceased.

© Compiled from news reports