US President Donald Trump has urged Iran and Israel to de-escalate tensions as the two countries have exchanged air strikes over the past 24 hours.

Writing on his social media platform Truth Social, Trump said simply: "Israel and Iran must immediately stop 'shooting.'"

Trump had earlier warned against the resumption of retaliatory attacks, telling an Axios reporter on June 7 that he planned to tell Israeli Prime Minister Benjamin Netanyahu to refrain from retaliating against an Iranian missile barrage as the fragile cease-fire in the Middle East appeared to be in danger.

The Israel Defense Forces (IDF) reported several waves of Iranian missile attacks on Israeli territory early on June 8.

"Defense systems are operating to intercept the threat," the IDF said in a post on X.

The Israeli military also confirmed that its air force struck several targets in the petrochemical complex in Mahshahr, southwestern Iran, on June 8.

"The Israeli Air Force struck military targets belonging to the Iranian terror regime in western and central Iran a short while ago," the IDF wrote on X.

Iranian media reported that a strike on the Karun Petrochemical Company in Mahshahr had caused damage to parts of the facility.

Iranian state TV said explosions were heard in cities across the country, including Tehran, Karaj, Tabriz, and Isfahan.

The strikes come after Iran fired a barrage of missiles toward Israel in its first attacks on the country since a shaky cease-fire took effect on April 8 between Tehran and Washington, saying it was in retaliation for Tel Aviv's military strikes on Beirut.