East Japan Railway Company has resumed Shinkansen bullet train services on three lines between Tokyo and two cities, except for two trains. Operations on the lines had been suspended due to a power outage.

Services had been interrupted since earlier Tuesday between Tokyo and Sendai stations on the Tohoku line, as well as Tokyo and Takasaki stations on the Hokuriku and Joetsu lines.

JR East said the power outage occurred at around 10 a.m. on Tuesday. It said workers found an overhead power cable dangling in an area between the stations of Ueno and Omiya.

The workers also found the Hokuriku line's Kagayaki train, which came to stop about 1 kilometer past the location of the fallen wire, suffered damage to pantographs and a window.

The company said investigations are ongoing. But it believes the Kagayaki train came into contact with the cable, which was hanging down for some reason.

JR East said 283 scheduled bullet trains were cancelled, affecting about 120,000 people.

The company said workers towed away the Shinkansen train that became unable to run by itself, and fixed the damaged wire.

It said the repair work has been completed. It resumed normal operations on Wednesday, except for two morning trains, one from Nasushiobara Station for Tokyo Station, and another from Tokyo Station for Yamagata Station.

Two workers were injured while repairing the damage and taken to a hospital.

The company said it will investigate the cause of the cable trouble and the workers' injuries.