World leaders are preparing to gather in South Africa for Nelson Mandela’s memorial on Tuesday.

South Africa’s parliament is to meet to pay tribute to Nelson Mandela, as world leaders prepare for Tuesday’s national memorial service.

The sitting comes at the start of a week of commemorative events before a state funeral on 15 December.

More than 100 current or former heads of state or government are to attend either the memorial or the funeral.

On Sunday, millions took part in a “day of prayer” to remember the country’s first black president.

Monday’s parliament sitting will be a special session.

Mr Mandela’s former wife Winnie Madikizela-Mandela and grandson Mandla are both MPs of the African National Congress but it is unclear whether they will attend.

ANC spokesman Moloto Mothapo said: “We hope some members of the Mandela family will be there.”

FW de Klerk, South Africa’s last white president, who shared the 1993 Nobel Peace Prize with Mr Mandela, has been invited.