Meanwhile, after Toshiie MAEDA died in March 1599, Kiyomasa was involved in an attempted assassination of Mitsunari ISHIDA along with six generals including Masanori FUKUSHIMA and Yoshinaga ASANO.
そして慶長4年（1599年）3月に前田利家が死去すると、福島正則や浅野幸長ら6将と共に石田三成暗殺未遂事件を起こした。