Services on the newly opened Fukutoshin (Subcenter) Subway Line in downtown Tokyo have been disrupted for four consecutive days since its inauguration on Saturday due to technical problems and errors, its operator said. "A series of problems were caused...

A new subway line connecting the Ikebukuro, Shinjuku and Shibuya districts of Tokyo is to begin operations on Saturday. The 20.2-kilometer Fukutoshin (Subcenter) Line comprises of the newly constructed 8.9-kilometer section between Shibuya and Ikebukuro...