Subway trains on the Namboku Line of Tokyo Metro and Mita Line of Toei were stopped for 80 minutes on Monday night due to smoke stemming from cigarette butts abandoned by train staff, the two companies said Tuesday.
According to the companies, smoke was detected at 6 p.m. near Shirokane-Takanawa station where the Namboku Line and Mita Line intersect. About 1,300 passengers were evacuated from the station and the platform was closed for 80 minutes. More than 41,000 commuters were affected, said the two subway operators.
The authorities said they found a lot of abandoned cigarette butts along the tracks, which caused the smoke. They said an initial investigation showed that maintenance staff had been abandoning cigarette butts on the side of the tracks on a regular basis.© Japan Today