The South African administration continued the so-called "Police Zone" in south, a region created by the Germans covering about two-thirds of the province later to become Namibia. Ovambo people were not allowed to move into the Police Zone, neither other tribes nor Europeans could move north without permits. This isolated the Ovambo people. However, because of labor shortage in the Police Zone and South Africa, in part because of massacre of native Africans such as through the Herero and Namaqua genocide, the South African government allowed migrant wage labor. Numerous Ovambo people became migrant laborers in South African towns such as Cape Town and in the Police Zone, where they experienced segregation and lived under highly restrained human rights.