 Garvanov, along with Boris Sarafov was killed by Todor Panitsa, close to the left wing leader of IMARO Yane Sandanski, in 1907.Garvanov was one of the staunchest opponents of Sandanski in the squabbles dividing the IMARO after 1903.The assassination of Sarafov and Garvanov, turned the IMARO factions into a war of extermination that lasted for decades.