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Expelled ANC Youth League president Julius Malema is expected to address the media in Sandton at lunch time on Tuesday after he was denied entry to address mineworkers in Marikana.
Police stopped Malema at the gates of Wonderkop stadium on Monday, where the workers had gathered to be briefed on developments about their wage demands.
After a lengthy discussion, Malema drove off, escorted by about 10 police vans.
A police helicopter circled above, while police on foot patrol ran to points of entry to stop Malema if he made any turns.