File photo: Iran's Supreme Leader Ayatollah Ali Khamenei greeting an audience during a speech in Tehran. AFP
The sources added to Reuters that Iran was in "constant contact" with Lebanon's Hezbollah and other Iran-allied groups to plan their next steps following Israel's claims that it had assassinated Hezbollah chief Hassan Nasrallah in a strike on southern Beirut on Friday.
Although Hezbollah did not confirm whether Nasrallah had been killed, a source close to the Lebanese group told AFP on condition of anonymity that contact with Nasrallah had been lost since Friday evening.
Shortly after the Israeli announcement, air-raid sirens rang out in Israeli settlements north of Jerusalem, warning of an exceptionally far-ranging rocket attack from Lebanon.
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