Pretoria - Tshwane metro police officers fled from ANC supporters who flipped their car during a protest in central Pretoria on Monday, an eyewitness said.
"I heard noises from my room and I thought it was just people fighting. I then heard sirens from a police car," said the resident who asked not to be named.
"As I peeped out of my window to see what was happening, I saw the group hitting the car. The officers then got out and started running away."
The crowd then pelted the car with stones and broke the windows before they flipped it onto its roof.
They were protesting against the nomination of ANC national executive committee member and former public works minister Thoko Didiza as mayoral candidate for Tshwane.
The crowd did not want anyone taking pictures of what they were doing. They screamed: "Let's burn this car. Let's start a fire and block this road."
Those living in the flats nearby were pelted with stones when they tried to take pictures and videos.
The group left before a large contingent of police officers arrived. About 10 officers got the car back on its wheels before it was towed away.
Tshwane Metro Police spokesperson Senior Superintendent Isaac Mahamba said three of the officers who responded were slightly injured and were taken to hospital for observation.
"At this stage, we don't know who the suspects are, but we just know it was a group of protesters," said Mahamba.
Find everything you need to know about the 2016 Local Government Elections at our News24 Elections site, including the latest news and detailed, interactive maps for how South Africa has voted over the past 3 elections, or download the app for iOSand Android.