A community member who asked not to be named said the 18-year-old was affiliated to the local gang, the "Freaks", and the community wanted him to point out the rest of his gang members.
"That boy is part of the Freaks gang. They go around robbing and injuring people.
"The community is fed up and want to clean up the township," he said.
Meanwhile, the second victim, Njabulo Buthelezi, 20, was dragged out of his neighbour's house and beaten to death in the presence of his father, Jeremiah Mbuyisa, on Saturday night .
Mbuyisa said his son worked at a local Pick n Pay store and was not a gangster.
"I raised him in a Christian home as I am a pastor. I would never allow him to be part of criminal activities. I think he was attacked because of his friend who the crowd was looking for. They said Njabulo allegedly robbed them last month," he said.
Mbuyisa said he attempted to stop the mob but one of them pulled out a gun on him.
"They pulled out a gun and chased me away. I was helpless as there were a lot of them, I could not stop them."