In the statement condemning the attack against Isak, Ghana said "taking of any life is unacceptable, and those responsible must be brought to justice without delay".

"Ghana demands from the South African authorities a full, transparent and expedited investigation leading to the arrest and prosecution of the perpetrators," it said.

It urged South Africa to abide by its international obligations to "guarantee the safety, dignity and rights of all foreign nationals on its territory, including Ghanaians".

Ghana's Joy FM media outlet described Isak as a tailor who had lived in South Africa for about 20 years. He was reportedly approached at his shop by people who allegedly accused him of taking South African jobs, before shooting him.

Plans were under way to repatriate his body back to Ghana for burial, according to the Ghanaian foreign ministry, which also sent its condolences to the family.

The ministry advised its citizens who had chosen to remain in South Africa to remain vigilant and avoid high-risk areas.

South Africa has one of the highest rates of unemployment in the world at more than 30% and anti-migrant sentiment has been rising in recent months.

The continent's most developed economy remains a magnet for people from poorer countries seeking work often in low-paid jobs.

Read More