The African National Congress on Thursday, said the late Helen Suzman was a vocal critic against apartheid.

Spokesperson Brian Sokutu said the ANC remembered and respected her contribution towards the demise of apartheid.

"Suzman used Parliament to fight injustices in South Africa. She became a thorn in the flesh of apartheid by openly criticising segregation of blacks by a whites-only apartheid system," he said.

"Her frequent visits to jailed former ANC leader Nelson Mandela and speaking out against forced removals at Crossroads in the Western Cape and other injustices by then minority white regime, speaks volumes about this stalwart."

Helen Suzman died at the age of 91, on Thursday.

Sapa