About suspension of operation of municipal subway blue line (turn-off operation) (1st report)

　At 7:15 pm on December 19, today, the abnormal current between Isezaki-Chojamachi Station and Yoshinocho Station was detected at the substations, and the operation was postponed on the entire line, but at 8:04 pm Kami-Ooka Station We return from Shonandai Station to Yokohama Station at 8:11 pm.
　Even now, we have suspended the operation between Kami-Ooka Station and Yokohama Station.
　We apologize for any inconvenience this may cause.
1 Overview of driving problems
　（1） Date and time of occurrence
　　　　7:15 pm Tuesday, December 19, 2023
　（2） Location of occurrence
　　　　Municipal Subway Blue Line between Isezaki-Chojamachi Station and Yoshinocho Station
　（3） Progress, etc.
　　　　7:15 pm The abnormal current between Isezaki-Chojamachi Station and Yoshinocho Station is detected at substations.
　　　　7:16 p.m. All-line operation suspension
　　　　8:04 pm Return operation between Kami-Ooka Station and Shonandai Station
　　　　8:11 pm Return operation between Azamino Station and Yokohama Station
2 Cause
　　We are currently investigating.