United Democratic Movement leader Bantu Holomisa has paid tribute to Albertina Sisulu calling her a "shining light in the struggle for liberation". Photo: Independent Newspapers

United Democratic Movement leader Bantu Holomisa visited former president Nelson Mandela's home in Houghton, Johannesburg on Thursday, while the statesman was being treated in Milpark hospital.

“I am not a family spokesperson,” Holomisa told media outside the house before climbing into his BMW X5 and driving away.

The number of journalists in the street outside his home continued to swell on Thursday afternoon, hoping for news on Mandela's health.

But no further news was forthcoming on Mandela's condition.

Cameramen set up their equipment in the street, which was open, with just a few metres outside his house cordoned off.

By 5.30pm on Thursday, the Nelson Mandela Foundation had not changed its Wednesday statement that the 92-year-old had been admitted for routine tests and was in good spirits, drawing criticism from some quarters that the silence was fuelling speculation.

The presidency would only say he was “comfortable”, while appealing for calm.

Security guards outside the house said that earlier on Thursday a convoy of at least 20 vehicles had arrived at the house.

Thursday's high security at the house was considered usual with guards questioning anyone approaching to find out what their business was.

The house in the expensive suburb with its high walls has been a favourite stop for tourists.

A few neighbours had also arrived in the hopes of receiving news from behind the high wall.

Similar scenes were playing out at Milpark Hospital in Johannesburg, where Mandela was said to be receiving good care. -