Ali Khamenei was "carrying out his duties and was present at his workplace," and the attack took place early Saturday, Iranian state media reported, according to Reuters.
The Iranian Revolutionary Guards vowed that Khamenei's "murderers" will be severely punished. The Revolutionary Guards praised him as a "fantastic leader."
US President Donald Trump announced on Saturday evening, local time in Sweden, that Khamenei was dead.
40 days of national mourning have been declared in Iran.
Iranian media also report that Ali Khamenei's daughter and granddaughter have been killed in US and Israeli attacks. Khamenei's son-in-law is also reported to have been killed, according to the pro-regime Iranian news agency Fars, among others.
