The position of Deputy President Jacob Zuma is not on the agenda of a meeting taking place at African National Congress headquarters in Johannesburg on Monday afternoon, a party spokesman said.

"Its an ordinary official meeting," ANC spokesman Smuts Ngonyama said of the weekly event that saw the party's top six leaders gather in conference.

Attending are ANC president Thabo Mbeki, his deputy, Zuma, ANC chairman Mosiuoa Lekota, party secretary general Kgalema Motlanthe, his deputy, Sankie Mthembi-Mahanyele and treasurer Mendi Msimang.

There would be no statement made afterwards, Ngonyama said as the meeting went into a fourth hour at 2pm.

Sometimes meetings continued "up until very late", he amplified.

Ngonyama also said he did not have any idea what was on the agenda. That was decided by the leaders themselves.

However, he did say there would be "no discussion on Zuma".

President Street, outside Luthuli House, the ANC's national head office, was blocked off to traffic for the duration of the meeting.

Security guards were milling around on the pavement outside, keeping a watchful eye on a handful of journalists.

With acknowledgement to Carol Hills and Sapa.