Violence between black factions in Natal Province is another of the major obstacles to negotiation today.
More than 2,500 people have been killed since fighting between rival black political factions began five years ago.
He has spent his moral capital trying, unsuccessfully, to end the murderous conflict between black political factions.
But senior officials concede that the agreement is not likely to end the latest wave of strife between the rival black factions.
He also made a strong call for black unity, an apparent attempt on his part to end feuding between black factions.
The meeting had been called to try to halt the warfare between black factions loyal to the two leaders.
The black faction accused the police of a double standard, saying a black driver would have been arrested immediately.
South African police said the deaths were the result of a struggle between black factions.
A total of 32 people died in fighting between black factions since Saturday, reports said.
But others said the killings coincided with several days of bitter fighting between black factions.