About smoke from inside track of municipal subway Blue Line Nakada Station

　On December 18, smoke was confirmed on the track of the Municipal Subway Blue Line Nakada Station, so we stopped driving on the entire line from 7:48 am. From 8:19 am to 10:39 am, a return operation was carried out between Totsuka Station and Azamino Station.
　We apologize for any inconvenience this may have caused to you.

1 Process
　(1) Location of occurrence
　　　Municipal Subway Blue Line Nakada Station
　(2) Process
　　　Monday, December 18, 2023
　　　7:47 a.m. Smoking on the Nakada Station track
　　　7:48 a.m. All trains are suspended
　　　8:19 a.m. Totsuka Station-Azamino Station Return Operation
　　　8:27 am On-site confirmation of maintenance staff and fire and police between Tateba Station and Nakada Station on the upper and lower line
　　　9:38 a.m. Site confirmation completed
　　　10:39 a.m.

2 Impact
　　Approx. 60,000 employees

3 Cause
　　The cause is currently under investigation.