A power outage stemming from an operational error at a power substation briefly disrupted services of key railway networks in Tokyo on Tuesday morning, affecting some 41,000 passengers, East Japan Railway. Co. said.
The operator said a total of 75 trains, including those on the Yamanote loop line and Keihin-Tohoku Line that run through central Tokyo, were delayed.
According to JR East, the power outage was caused due to an operation error during maintenance work at one of its hub substations in Warabi, Saitama Prefecture near Tokyo.
Services were suspended for up to 40 minutes, with some trains trapped between stations. There are no reports of passengers suffering any health issues due to the disruption, the operator said.
