A PETROL bomb has exploded at the house of a leader of South Africa’s United Democratic Front in Nyanga, a black suburb of Cape Town, police said on Wednesday. Nobody was injured in the attack on Erasmus Ndakane’s home in the area where five politicians have been killed in the run-up to South Africa’s June 2 elections, but the house itself was badly damaged by the explosion, police spokesman Captain Etienne Terre’blanche said. The police have not arrested anybody for the attack, he said. The incident was the first serious violent attack in the area since March when four local leaders of the UDM and a municipal councillor of the African National Congress were shot dead in a week of political violence.