ANC chief whip Stone Sizani has resigned from Parliament with immediate effect, the party said on today.
An ANC MP, who spoke off the record, said Sizani was heading to Germany, where he would be deployed as an ambassador.
Sizani would be temporarily replaced by deputy chief whip Doris Dlakude, said spokesperson Moloto Mothapo.
He did not say where Sizani would be going.
"The National Executive Committee of the ANC will make a decision regarding the replacement when it meets for its regular sitting in a few weeks' time," he said.
Sizani was appointed to the position in 2013.
The MP said the party had found out at an urgent caucus meeting, called on Wednesday.