When the quarters of FUJIWARA no Mitsusada located by the Akuto-gawa River was attacked in 1056 under the truce accord with the Kokufu side (ancient provincial office), Yoriyoshi demanded the handover of Sadato who was determined to be the ringleader of the attack, but the Abe clan refused to it, resulting in the resumption of the war.
国府側との停戦中の天喜4年（1056年）に、阿久利川において藤原光貞の営舎が襲撃される事件が起こると、頼義は張本人と断定された貞任の身柄を要求し、安倍氏がこれを拒絶して再び開戦となる。