The ANC said it was saddened by news that Billy Nair, a founding member of the United Democratic Front, has died.

Spokesperson Jessie Duarte described Nair as a "gallant revolutionary who was unwavering in his commitment and dedication to the struggle for a democratic and just South Africa."

A member of the Umkhonto we Sizwe, Nair was imprisoned on Robben Island together with Ahmed Kathrada.

"Comrade Nair was a tireless and principled political activist, who remained engaged in the struggle until the end of his life.

"The ANC will forever treasure the contribution made by Comrade Billy Nair in the struggle for liberation and the building of our democracy."

President Kgalema Motlanthe mourned the loss of his long time friend and comrade, Duarte said.