Iranian state television on Sunday confirmed the death of Iran's supreme leader Ayatollah Ali Khamenei, without referring to a massive U.S. and Israeli attack on his residence.

Israeli Prime Minister Benjamin Netanyahu said that there were signs that Iran's Supreme Leader Ayatollah Ali Khamenei had been killed in an attack on his compound as part of U.S.-Israeli strikes.

The U.S. ambassador to Lebanon informed the country that Israel had no intention of escalating hostilities as long as no attacks were launched from Lebanon, the Lebanese presidency said in a statement.

The message came as Lebanese authorities fear Iran-backed Hezbollah could become embroiled in renewed conflict with Israel after the U.S. and Israel bombed Iran on Saturday and Tehran responded with missile attacks.

The United States and Israel launched a wave of strikes against targets in Iran on Saturday, sparking swift retaliation by the Islamic republic which responded with missile attacks across the region.

Two witnesses told AFP they heard an explosion and saw a plume of smoke rising from Dubai's famed man-made island The Palm, as Iran carried out retaliatory strikes in the Gulf following U.S. and Israeli attacks.

Lebanon's Iran-backed Hezbollah called on Saturday for the Middle East to stand against Israel and the United States' attack on Iran.

The death toll from an attack Saturday on a school in Iran's south has risen to 85, the judiciary said, after the U.S. and Israel launched strikes on the Islamic republic.

"The number of martyrs at the girls' school in Minab has increased to 85," the judiciary's Mizan Online website quoted the area's prosecutor's office as saying.

In a post on X, United Nations special coordinator for Lebanon Jeanine Hennis-Plasschaert urged "all parties in Lebanon" to "prioritize, in words and actions, the need to shield the country and its people from unfolding regional developments".

The remarks come after Israel and the United States launched strikes against Iran.

Iraq's powerful pro-Iran group Kataeb Hezbollah warned Saturday it will start imminent attacks on U.S. bases after air strikes hit an Iraqi military base housing the group.

"We will soon begin attacking American bases in response to their aggression," the group said in a statement.

Saudi Arabia condemned Iranian attacks targeting its neighbors in a statement released by the kingdom’s official press agency Saturday, following a flurry of salvos across the Middle East as Israel and the U.S. bombed Iran.

"The kingdom strongly condemns and denounces in the strongest terms the brutal Iranian aggression and the blatant violation of the sovereignty of the United Arab Emirates, the Kingdom of Bahrain, the State of Qatar, the State of Kuwait, and the Hashemite Kingdom of Jordan," said the statement.