CAIRO: Saudi Arabia's Crown Prince Nayef bin Abdul Aziz al-Saud has died, state media reported on Saturday. The report added that the man next in line for the King died while outside the country. He had traveled to Europe recently to receive medical treatment. Nayef will be buried on Sunday, but the state media did not provide any further details about his illness or cause of death. He was in his late 70s and had struggled with health issues for a number of years. Prince Nayef had been serving as interior minister when King Abdullah named him crown prince last year. He had led the Interior Ministry since 1975 and was closely aligned with the country's conservative clerics.