Residents had protested in the area on Wednesday afternoon.
"It is quiet this morning but officers are still monitoring the area," said Chief Superintendent Wayne Minnaar.
During Wednesday's demonstrations, locals blockaded Malibongwe Drive near Cosmo City with rocks and burning objects.
The road had been cleared on Thursday and traffic was flowing, said Minnaar.
While the demonstrators’ demands were unclear, Captain Lydia Mtila-Dikolomela of the SA Police Service said it was suspected the protest was about housing, following a fire that gutted 50 shacks and killed two people at the informal settlement on Sunday.