The Democratic Alliance (DA) on Friday said it had unmasked one of its councillors in Johannesburg as an African National Congress (ANC) supporter.
The party said that Anthony Still broke ranks with the organisation and failed to adhere to DA instructions.
On Thursday, DA councillors staged a walk out of the Joburg council in protest at what they described as a council presided over by an illegitimate speaker.
But when they left, Still remained, showing allegiance to the ANC.
The DA’s Funzela Ngobeni said: “…And when we got the point where us as the leadership of the caucus instructed the caucus to walk out, the councillor decided to remain in the council chamber together with the ANC and their partners. And by remaining, that was decorum to continue with the illegal meeting.”