About suspension of partial section operation of municipal subway blue line (turn-off operation)

At around 5:20 today, on the municipal subway blue line between Kannai and Sakuragicho, there were several stops during the train passing, so we stopped driving on the entire line temporarily, and at 5:50, we started turning back operations between Shonandai and Kamiooka and Yokohama and Azamino.
Currently, we are confirming the cause of the failure and proceeding with restoration work, and the train is carrying out return operation on the same section with delays. We apologize for any inconvenience this may cause. I'm sorry.

1 Date and time of occurrence
　March Thursday, March 3, 2022 around 5:20

2 Location of occurrence
　Municipal Subway Blue Line between Kannai and Sakuragicho

3 Overview
　At 5:20, the train stops on the train between Kannai and Sakuragicho.
　　　　　 Cancellation of driving on all blue lines
　At 5:28, after the train resumed, the train was driven and the stop was stopped again.
　5:41 Requested transfer to another company line
　5:50 Return operation between Shonandai and Kamiooka, between Yokohama and Azamino
　As of 8:30, it is still in operation on the same section.

4 Status of locations where electric stops occur
　The pickup shoes of the train that ran at the time of the stop were dropped off, and several insulators supporting the third rail were damaged.
　(* On the blue line, electricity is supplied from the third rail laid next to the rail through train power collection shoes.)