He suddenly decamped from Kyoto in March 1341 and headed for Izumo, but was suspected of treason and chased by bakufu based on a false charge made by KO no Moronao that he committed suicide in Kageyama Mountain, Harima Province (current Himeji City, Hyogo Prefecture).
暦応4年（1341年）3月突然京都を出奔し出雲に向かうが、高師直の讒言により謀反の疑いをかけられ、幕府の追討を受けて播磨国蔭山（現在の兵庫県姫路市）で自害した。