Service delivery protests in Wesselton, outside Ermelo, were entering a second day on Tuesday, Mpumalanga police said.
“The protest did not stop last night, it only subsided,” Captain Leonard Hlathi said.
He said protesters were still setting tyres alight in the township.
Thirty-three people would appear in the Ermelo Magistrate's Court on Tuesday after they were arrested on Monday for public violence.
Hlathi said protesters barricaded roads by using burning tyres and stones on Monday.
“They broke down robots and some traffic signs.”
Police could not say how many people were participating in the protest because they were operating in different areas.
No further details were immediately available. - Sapa