The time is drawing near for Tokyo's lawmakers to use a powerful investigative tool in a bid to seek answers about the Tsukiji fish market relocation fiasco.

The first session of the Tokyo Metropolitan Assembly's special committee kicks off Saturday with an aim to investigate the issue concerning the relocation of the capital's famed Tsukiji fish market to the Toyosu district in Koto Ward.

Tokyo Metropolitan Assembly members will question key figures involved in the relocation process including former Gov. Shintaro Ishihara and his close aide and Vice Gov. Takeo Hamauzu.