Some Bulgarian and Macedonian historians like Zoran Todorovski speculate that it might have been the circle around Mihailov who organised the assassination on inspiration by the Bulgarian government, which was afraid of united IMRO-Communist action against it.
Pojedini bugarski i makedonski povjesničari poput Zorana Todorovskog, špekuliraju o tome da su možda postojali izvjesni krugovi oko Mihajlova koji su organizirali ubojstva po nalogu Bugarske vlade, koja se bojala ujedinjenja VMRO-a i komunista protiv nje.