I’ve read somewhere that the leaders are in Nigeria. After you got a person that represent the organization in each country. One person for every cities and so on.
according to italian police, for example, the boss of black axe in italy was in padua (northern italy) and he commanded other crews in other parts of italy, so the nigerian mafia seems to be hierarchical like the italian mafia and with rituals, in fact police said it's the most similar to italian mafia even more than other foreign criminal groups
