JOHANNESBURG, April 3 (Xinhua) -- Different organizations and government entities on Tuesday mourned the passing away of the anti-apartheid stalwart Winnie Madikizela-Mandela.

She passed away on Monday at a private hospital after a long illness. Madikizela Mandela was married to the late South African President Nelson Mandela. Many from government, private sector and civil society described Madikizela Mandela as a brave, courageous and true hero of South Africa's liberation.

South African former President Thabo Mbeki described Madikizela Mandela as an outstanding militant and leader of the struggle for liberation.

Madikizela Mandela served as the Deputy Minister of Arts, Culture, Science and Technology and as a member of Parliament. She was also the former ANC Women's League president.

National Education, Health and Allied Workers' Union which represents social workers and other health workers also mourned Madikizela Mandela.

South African President Cyril Ramaphosa said said Mdikizela Mandela will receive an official state funeral on April 14, 2018.