Former South African Public Protector Prof Thuli Madonsela has urged employers to work with the government to address South Africa's immigration challenges, warning that violence against undocumented migrants could harm trade, investor confidence and the country's standing in Africa.

Dozens of protesters marched through the streets of Cape Town on Saturday, calling for stronger action against illegal immigration and urging government authorities to address the alleged growing impact of undocumented migration on South African society.