"I have evidence which, when brought together, could bring the Pretoria Government to a fall."
The Pretoria Government has taken steps in recent days to control the violence.
"I don't know what the strategy of the Pretoria Government is," he said.
The 1986 law put additional economic and political pressure on the Pretoria Government to end apartheid.
The Pretoria Government legalized black labor unions 10 years ago.
The Pretoria Government has hinted that it may act soon to curb union power.
It will hamper the ability of journalists to report on any information that the Pretoria government deems to be secret.
The Pretoria Government, which said it was aware of the meeting, reacted coolly to the reports.
State Department officials say it has little support and receives aid from the Pretoria Government.
He was said to be in contact with the State Department and the Pretoria Government.