The victims, and four others critically injured, were returning from a colleague's funeral in the coastal region of Kwa-Zulu Natal, police said.
Eleven taxi drivers have been shot dead in South Africa after gunmen opened fire on a minibus carrying members of a taxi drivers' association, police have said.
South Africa's taxi wars, which have raged since the 1980s, have been linked to most of the 1,500 contract killings recorded since 2000. "There has been a lot of taxi violence in the area but we are still investigating who the perpetrators were".
One person was in a critical condition and three others sustained moderate injuries.
"We will await for the investigation to advance before speculating on a motive", said Sitole.
The country has seen a spate of taxi violence by rival groups vying for dominance on profitable routes.
Police spokesperson, Jay Naicker could only confirm that there are multiple fatalities on scene and that the crime scene is still active.
Ten people were reportedly killed in deadly clashes between taxi groups in western city of Cape Town in May.