A farkon shekara ta 1923, a tsakanin zargin da ake yi cewa an shirya juyin mulki ga Tsagaan Sar, yanayin faɗakarwa ya zama mai wahala ga Sükhbaatar. Ya rushe a daren 14 ga Fabrairu, ya mutu a ranar 20 ga Fabrairu. A cikin shekarun 1940 a ƙarƙashin mulkin Choibalsan, an yi zargin cewa an yi wa Sükhbaatar guba, amma daga baya wallafe-wallafen gurguzu ba su tattauna dalilin mutuwar ba. Duk da haka, wannan sigar har yanzu tana da mashahuri a Mongolia. Wasu masana tarihi sun ce ya mutu ne saboda ciwon huhu, saboda ko dai ruwan sama ko sanyi. Tambaya: Wanene ya tabbatar da cewa an shirya juyin mulki don Sükhbaatar?
Tsagaan Sar