In recent years, many Zimbabweans have been abducted from South Africa and sent back to their country.

Those abductions, according to some, indicate clear co-operation between the South African secret services and the Zimbabwean government, trying to catch those who tried to overthrow Robert Mugabe from power back in 2007.

A high court judge in South Africa has given hope to some Zimbabweans, when he ruled that, under international law, South Africa was obliged to investigate crimes against humanity committed by officials in Zimbabwe.

Al Jazeera's Haru Mutasa reports from Harare.