 The Ōtsu incident, a failed assassination attempt on Tsarevich Nicholas Alexandrovich of Russia (1868 – 1918, later Tsar Nicholas II), occurred on 11 May 1891.Nicholas, returning to Kyoto after a day trip to Lake Biwa, was attacked with a saber by Tsuda Sanzō (1855 – 1891), an escort policeman.Nicholas survived the assassination attempt, but the incident caused national outcry against Tsuda and was seen as a crisis in Japanese-Russian relations.