"The violation of the key oath of office of the head of state, which I think is a deep crisis. I think it’s in all of our interests that the president actually steps aside," he said in an interview with Soweto TV, which will be aired on Tuesday night at 19:30.
A short clip of Manuel calling for Zuma to step down was posted on Soweto TV's Twitter page.
"...I think it's in all our interest that the president actually steps aside" - @TrevorManuel | @TimModise at 19:30 pic.twitter.com/mq5QdwK0wW— IG: SowetoTV (@SowetoTVchannel) April 5, 2016