Former Chiyoda ward councilor and others to be re-arrested in government bid-rigging case; leaked about three other cases?. It appears that several companies formed a voluntary organization and lobbied legislators, and the Metropolitan Police Department is investigating the incident, believing that fraud had become commonplace.

He was arrested in January this year on suspicion of violating the Government Collusion Prevention Act for informing contractors in advance of the number of contractors participating in the bidding. It is believed that some of the contractors, more than a dozen of them, formed a voluntarily organization and asked legislators about the construction they wanted to bid on.