October 20 of the same year, Kichigoro along with his fellows including Kazusuke MATSUSHIMA, Sukegoro MIYAGAWA, Jinbe SAWADA, Kanetsugu ANDO, Sadaroku OKAYAMA, Yasutaro HAYAKAWA, and Kentaro NAKAYAMA visited Sanjo-ohashi bridge and tried to remove the notice board and, therefore, they were attacked by Shinsengumi members who were watching the notice board including Sanosuke HARADA and Tadao ARAI, who fought back using their long swords, however, Kichigoro was killed (Sanjo notice board incident).
その9月12日、藤崎は松島和助、宮川助五郎、沢田甚兵衛、安藤鎌次、岡山禎六、早川安太郎、中山謙太郎などと共に三条大橋を訪れて高札を引き抜こうとしたため、見張りについていた新選組の原田左之助・新井忠雄らから襲撃を受け、長剣を振るって応戦したが死亡した（三条制札事件）。