However, "Gukansho" (Jottings of a Fool), written by Jien, a young brother of Kanezane KUJO includes the descriptions that the incident occurred while Kagesue KAJIWARA, a powerful gokenin (retainer of the shogun) close to MINAMOTO no Yoriie was staying in Kyoto and that OE no Hiromoto, Mandokoro betto (Director of the Administrative Board) in the Kamakura bakufu was an associate of Michichika.
しかしながら、九条兼実の弟・慈円が著した『愚管抄』には、源頼家に近い有力御家人の梶原景季の京都滞在中に事件が起きたこと、鎌倉幕府政所別当の大江広元が通親の方人（同志）であったと記述されている。