A councillor who attended Friday's council meeting said Nzuza's leave was scheduled. But it was decided that action needed to proceed despite this.
"The mayor, Mxolisi Kaunda, will write to Nzuza to ask him to give reasons why he should not be suspended. The city manager will have to respond to the letter within seven days. Someone will be acting [as city manager] while he is on leave," the councillor said.
The meeting was held in-committee, meaning what occurred inside can not be discussed. But TimesLIVE contacted four other councillors, who confirmed the details of the meeting.
eThekwini spokesman Msawakhe Mayisela said an official statement would be released on Saturday.
Before the meeting, ANC branches aligned to Gumede released a statement saying they wanted to ask the council speaker to suspend Nzuza.
Nzuza, who assumed the top job in 2017, turned state witness in the corruption case against Gumede and her co-accused last year. However he was arrested this week by the Hawks on charges including fraud, corruption and maladministration.