Residents of south Lebanon's Tyre including the Christian quarter fled on June 9, after Israel's army for the first time warned the entire city to evacuate ahead of strikes. The warning came a day after Iran warned it would resume attacks on Israel if it kept striking its neighbour.

Iran attacked US bases in Jordan and Bahrain on Wednesday, the latest salvo in tit-for-tat strikes with the United States after the downing of a US helicopter over the Strait of Hormuz.

The worst bout of fighting between Washington and Tehran since their April 8 ceasefire has cast further doubt on US President Donald Trump's earlier claim that negotiations were in their "final throes" before reaching an enduring settlement to end the Middle East war.

The fresh Iranian strikes came after the United States carried out its own attacks on the Islamic republic in response to Tehran shooting down an American helicopter.

Iranian forces fired "long-range missiles" and "targeted and destroyed four major targets" in Jordan, including F35 fighter nests at an air base and the US command centre in Al-Azraq, the country's Revolutionary Guards said in a statement quoted by state-run IRNA news agency early on Wednesday.