Members of the South African police stand guard near an ambulance that was escorting the ambulance which was believed to be carrying former South African President Nelson Mandela, outside his house in Houghton, Johannesburg September 1, 2013. Anti-apartheid leader Mandela returned to his Johannesburg home on Sunday where he will continue to receive intensive treatment and care after spending three months in hospital with a lung ailment. Mandela, 95, had spent 87 days in a Pretoria hospital after he was rushed there in early June suffering from a recurring infection in the lungs – a legacy from his time in jail under apartheid – that has dogged him for years. REUTERS/Siphiwe Sibeko (SOUTH AFRICA – Tags: POLITICS HEALTH)