According to JR East, around 9:58 AM (JST) on January 23rd, a power outage occurred on the Tohoku, Hokuriku, and Joetsu Shinkansen lines.
Upon inspection by staff, it was confirmed that the overhead wires were hanging down on the up track between Ueno Station and Omiya Station.
As a result of this incident:
JR East has dispatched maintenance crews to the site of the wire trouble to assess the situation further.
However, due to the anticipated time required for both assessment and restoration work, the resumption of services is expected to take a considerable amount of time.
We will continue to provide updates on the situation as more information becomes available.