File:Anti-apartheid activist Denis Goldberg (R), Picture: Reuters.

Struggle stalwart Denis Goldberg has died aged 87.

He was among the renowned Rivonia trialists tried in the 60s under the apartheid regime along with Nelson Mandela, Walter Sisulu and Govan Mbeki.

He was sent to a whites-only prison in Pretoria, where he spent 22-years behind bars.

Goldberg has been battling stage four lung cancer and a heart condition.

“His family and the Denis Goldberg Legacy Foundation Trust are very sad to announce that Denis Goldberg passed away just before midnight on Wednesday 29 April 2020. His was a life well lived in the struggle for freedom in South Africa. We will miss him,” said the Denis Goldberg Legacy Foundation Trust.

Between 2002 and 2004, Goldberg served as the adviser to Minister of Water Affairs and Forestry Ronnie Kasrils.

In 2009, Goldberg was awarded the Order of Luthuli in Silver for "his commitment to the struggle against apartheid and service to the people of South Africa".