The relatively favorable North Cameroonian area in the Chadian basin is a factor conducive to migration in general and Chadian immigration in particular. This historical work presents individual and environmental characteristics of the legal crime of Chadian immigrants in three selected prisons, the types of anti-social acts carried out as well as the consequences of this phenomenon. In addition, analytical, systemic and diachronic methods were use. Thus, oral sources, penitentiary registers, electronic journal articles were used. The present study shows how illegal transborder immigrants considerably impede development. Because, they contribute to the increase of the violence and crime rates, these uncontrolled migrations constitute an important challenge not only for the countries of Central Africa but also many other poor countries in the world. This contribution shows that the evolution of the antisocial behavior of these immigrants is one of the consequences of the situation and context of postcolonial Cameroon.
