Tokyo Gov. Yuriko Koike said Friday she would disclose the results of the Toyosu market soil pollution probe next week.

At her regular news conference at Tokyo Metropolitan Government headquarters in Shinjuku Ward, Koike said she hopes to reveal all of the facts behind why the metro government secretly changed the original design plan to ensure the clean layer of soil it promised would insulate the main buildings from pollution would never be inserted.

The soil layer was crucial to getting merchants at the famous Tsukiji fish market to approve the plan to relocate to Toyosu, where a toxic gas plant once stood.