Winnie Mandela taken to court by South Africa policeman

The police officer said he did not recognise the anti-apartheid activist

A South African police officer has laid charges against Nelson Mandela's ex-wife, after the pair clashed when he accused her of speeding, his union says.

The Solidarity union accused Winnie Madikizela-Mandela of trying to intimidate officer Jannie Odendaal.

She is accused of defeating the ends of justice, assault and reckless and negligent driving.

Mr Odendaal and a colleague have since been transferred from their posts.

Her driver and bodyguard have filed complaints of intimidation against the pair, saying they pointed their firearms.

Mr Odendaal, who stopped Winnie Madikizela-Mandela's car in December, said she had been driving at 150km/h (about 90mph).

South Africa's speed limit is 120km/h.