President Pranab Mukherjee will be attending South African leader Nelson Mandela’s funeral on December 15. He will lead an all-party delegation, which may include Congress president Sonia Gandhi. A final call on the members will be taken in the coming week. While Prime Minister Manmohan Singh’s attendance was also considered, he will not go as the Parliament session is underway, sources said. Mandela died on December 5 at the age of 95.