At first, MINAMOTO no Yoshitsuna, the second younger brother of Yoshiie, was considered to be the main culprit, and was annihilated in the punitive expedition by MINAMOTO no Tameyoshi, the adopted son of Yoshitada (the fifth son of MINAMOTO no Yoshichika), and after the incident, MINAMOTO no Yoshimitsu, another younger brother (the third younger brother) was found to be the real culprit, which made internal troubles and decline of Genji more apparent and its power was lost for a while.
当初事件の主犯とされた義家の次弟の源義綱が義忠の養子源為義（源義親の五男）の討伐を受けて壊滅、また事件後真犯人がもう一人の弟(三弟)源義光であったことが明らかになるなど、源氏内部の内紛・衰退がさらに明白になり、源氏の権勢はしばらく失墜した。