A railway power outage in Tokyo disrupted the morning commute for thousands on Friday as two main lines with some of the world's busiest stations were halted after reports of a fire.Trains on East Japan Railway's 9020.T Yamanote and Keihin-Tohoku lines were halted in all directions with no timetable for resumption, the railway said.For all the latest headlines follow our Google News channel online or via the app.A fire was reported on the tracks near Tamachi Station, where both lines stop, shortly before 8 a.m. (2300 GMT on Thursday), public broadcaster NHK said. Flames were coming from a transformer in the track area, and the fire was nearly extinguished about 30 minutes later, NHK said.Passengers were seen disembarking from a Keihin-Tohoku train stranded between stations and walking along the tracks to evacuate, assisted by firefighters and railway staff, in footage broadcast by the NTV network.The Yamanote Line passes through stations including Shinjuku, which handles about 3.5