Iran's armed forces threatened on Wednesday to target Israeli missions worldwide if Israel were to attack Tehran's mission in Lebanon, a military spokesman said.

The Israeli military is planning on at least "one or two" more weeks of strikes on Iran, Israeli media reported on Wednesday, the war's fifth day, while launching a fresh wave of attacks in Lebanon against Tehran-backed Hezbollah militants.

The Israeli military said anti-tank fire in south Lebanon injured two of its soldiers on Wednesday, after Hezbollah said it had struck two Israeli military vehicles.

Hezbollah said Wednesday it had targeted an Israeli military base near Tel Aviv in central Israel and a naval base in Haifa in the north with swarms of attack drones.

Nearly 150 people were missing and several dead after an Iranian warship sank Wednesday off Sri Lanka following what crew members reported as an explosion, officials said.

Iran announced that a state funeral for supreme leader Ayatollah Ali Khamenei, which had been planned for Wednesday evening in Tehran, was postponed "in anticipation of unprecedented turnout," state television reported.

"The farewell ceremony for the martyred Imam has been postponed. The new date will be announced later," Iranian television reported on Wednesday after Khamenei was killed in U.S.-Israeli strikes over the weekend.

The Israeli military told residents living south of Lebanon's Litani river to immediately head north on Wednesday, warning that the Israeli army was "compelled to take military action" against Hezbollah in the area.

Hezbollah said on Wednesday it had targeted the headquarters of Israel Aerospace Industries, in central Israel, overnight with a drone attack while also saying it launched a missile at a drone control base.

Israeli forces have advanced into a number of towns and villages in south Lebanon, a source from the U.N. peacekeeping force in the country, UNIFIL, told AFP on Wednesday.

Iran's Revolutionary Guards said Wednesday they had "complete control" of the crucial Strait of Hormuz and Israel launched fresh strikes on Iranian and Lebanese targets as the Middle East war continued into its fifth day.