The Electoral Commission of South Africa (IEC) is engaging with EFF leader Julius Malema about a complaint relating to veteran journalist Karima Brown.
"Our attorney dealing with the investigation has made contact with the EFF," said IEC chief electoral officer Sy Mamabolo about a case involving Malema posting Brown's contact details on Twitter.
This resulted in a series of threats being sent to her.
"Principles of natural justice demand that we give the person against whom an allegation is made an opportunity to hear his side of the story.
The EFF has requested more time to consider their response," Mamabolo told journalists during a media briefing on Thursday.
He said the commission would analyse the matter once the report is complete.