Pretoria - No arrests have yet been in the murder this week of North West businessman Wandile Bozwana, police said on Sunday.
The investigation was ongoing into the shooting on Friday of the Mahikeng-born businessman, while he was travelling in a car in Garsfontein, said police spokesperson Sergeant Asnath Malatji.
Bozwana later died in hospital. His female colleague, Mpho Baloyi, who was driving the car, was also shot and wounded in the waist.
On Sunday, Malatji said she remained in hospital.
The pair were travelling on the N1 north from Johannesburg at about 16:00 on Friday when gunmen in a silver grey BMW M3 allegedly pulled up next to their car near the Garsfontein off-ramp and opened fire on the branded Renault Clio.
About 12 bullets hit the car with nine of them hitting Bozwana, five in the lower back. Baloyi - who was driving the Clio - was shot twice, but managed to drive to a car dealership near Menlyn Shopping Centre to seek help.
Bozwana was a North West businessman, ANC funder and former provincial treasurer.
He had recently won a court case against the provincial government over a disputed payment.
He was also very vocal about business dealings in the North West and had organised businessmen to complain about the type of treatment they were getting. They accused North West Premier Supra Mahumapelo of enriching himself, interfering in government procurement and influencing the awarding of tenders to those close to him.