The Democratic Alliance (DA) has suspended an MP after an old video resurfaced online of him spewing violent racist language against black people.

Renaldo Gouws initially insinuated it was a doctored video and denied it but a statement issued by the DA on Thursday said it was "genuine and not a fake".

In the video Mr Gouws, who was sworn into parliament less than a week ago, uses a local slur typically reserved for Black Africans repeatedly along with the n-word.

The DA which now forms part of the government of national unity said Mr Gouws would face "disciplinary charges".