Nelson Mandela's two youngest daughters were in attendance at the London Royal Premiere of the new film about their father Thursday when they received word that he had died, NBC News reported. "They received the news of their father’s passing during the screening and immediately left the cinema," the Nelson Mandela Foundation said in a statement. Mandela's daughters, Zindzi and Zenani, requested that the film continue. Producer Anant Singh announced the death to the audience, which included Prince William and Catherine, Duchess of Cambridge, after the film ended. Singh asked the audience for a moment of silence in the South African leader's honor, the Associated Press reported.