A fraud investigation into Japanese construction firm Obayashi has spread to other major contractors as prosecutors probe contracts related to a ¥9tn ($79.3bn) super high speed magnetic levitation (maglev) train project.
The Tokyo District Public Prosecutors Office (TDPP) said those being voluntarily questioned include workers from multiple construction firms, including leading contractor Kajima. Obayashi and Kajima are two of the elite group of five dubbed “super-general contractors” in Japan.
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