Nelson Mandela’s co-winner of the Nobel Peace Prize and fellow former South African President, F.W. de Klerk, entered the hospital for heart surgery on Tuesday.

Mandela (left) and de Klerk (below) won their Nobel Peace Prize for their combined effort to end apartheid and establish democracy in South Africa, reports Voice of America.

De Klerk, 77, who is being fitted with a pacemaker, was Mandela’s predecessor and South Africa’s last apartheid president. They are two of South Africa’s three living Nobel Peace laureates, the third of whom is Desmond Tutu.

Mandela, 94, still remains in critical but stable condition in the Pretoria hospital where he has been since June 8.

Mandela’s family entered court on Tuesday to fight a battle over the burial location of Mandela’s three deceased children.

The revolutionary’s daughter, Makaziwe, is the leader of 16 members of Mandela’s family seeking to return the remains to his home village of Qunu, where Mandela wishes to be buried, according to the Guardian.

Mandla Mandela secretly exhumed the remains in 2011 and moved them to another village, Mvezo, where Mandela was born.

On Friday, the court gave an interim order for the bodies to be returned, which was in turn challenged by Mandla on Tuesday, reports the Los Angeles Times.

Images: WikiCommons, WikiCommons