No evidence Iranian Supreme Leader Mojtaba Khamenei is dead: US

US State Secretary Marco Rubio has said US has no evidence that Iran's Supreme Leader Mojtaba Khamenei is dead. "The unresolved questions here are does he have the same credibility as his father Ali Khamenei did," Rubio added when asked if Mojtaba is alive. A recent report claimed he may require plastic surgery as his face is severely burnt.