The Kinnoto, which regarded him dangerous, summoned INOUE at first to a fancy Japanese-style restaurant called 'Daiyo (otherwise written as 大與) and intoxicated him; then on the Shinsai-bashi Bridge, the four men Izo, Kiyoma HISAMATSU, Hachinosuke OKAMOTO, and Kinzaburo MORITA, restrained and strangulated INOUE, and threw his corpse over the bridge into the Dotonbori-gawa River.
これを危険と見た勤王党では、まず井上を料亭「大与（大與・だいよ）」に呼び出して泥酔させ、心斎橋上にて、以蔵・久松喜代馬・岡本八之助・森田金三郎の4人で、身柄拘束のうえ絞殺、遺体は橋上から道頓堀川へと投げ棄てた。