The announcement comes after Donald Trump said Khamenei, had been killed by US-Israeli strikes across Iran.
An intelligence source and a military source told the BBC's media partner, CBS News, that around 40 Iranian officials were killed in the strikes, including Khamenei. Israel earlier identified seven other officials it says it killed.
Trump says bombing will continue, and that "this is the single greatest chance for the Iranian people to take back their country" - see his statement in full.
In response, Iran launched attacks throughout the Middle East. Apparent Iranian strikes have been reported in Dubai, Doha, Bahrain, and Kuwait - places with US military bases, or that are allied to the US.
More than 200 people have been killed across Iran, the Red Crescent says. At least 108 were killed when US and Israeli strikes hit a girls' school, Iran says. (BBC)
