On October 14, 1187, an Innocho kudashibumi (a letter issued by innocho, the Retired Emperor's Office) was issued to Mutsu Province according to an appeal by Yoritomo firmly believing that Yoshitsune was harbored by Hidehira, saying, 'Priest Hidehira plots rebellion supporting the former Iyo no Kami (Governor of Iyo Province) (Yoshitsune).
9月4日、義経が秀衡の下に居る事を確信した頼朝から「秀衡入道が前伊予守（義経）を扶持して、反逆を企てている」という訴えにより、院庁下文が陸奥国に出された。