Iran Supreme Leader Ayatollah Ali Khamenei has been moved to safer place within the country and security has been beefed up after Israeli military said Tehran-backed Hezbollah chief Hassan Nasrallah was killed in the Beirut strike, said a report.
The sources quoted by Reuters said Iran was in constant touch with Hezbollah to decide on its next move.
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Iran's move comes after Israeli army chief said the IDF has not emptied its "toolbox" with Nasrallah's assassination. Chief of the General Staff Herzi Halevi said "the message is simple: Anyone who threatens the citizens of Israel – we will know how to reach them."
Hezbollah leadership was meeting at their undrground headquarters in south Beirut when the Israeli military launched its precision attack.
Hezbollah is yet confirm if Nasrallah has been killed. Earlier, a spokesperson of the group said the Hezbollah chief was fine and not in the targeted location.
Reports also said Nasrallah's daughter Zainab Nasrallah, Hezbollah missile unit commander Muhammad Ali Ismail and his deputy Hossein Ahmed Ismail were also killed in IDF strikes.
Israel had activated three batallions of reserve soldiers amid recent attacks in Lebanon.