Israel launched airstrikes into central and western Iran early on Monday in response to missiles fired from Tehran, the first such barrage since an April ceasefire took hold in the Middle East war.

Iranian state television reported the sound of explosions being heard in Isfahan, Karaj, Tabriz and Tehran, without immediately elaborating.

Iran closed the airspace around Tehran’s Imam Khomeini International Airport, the country’s main airfield, after the Israeli attack.

The Israeli military at dawn in Iran issued a short statement as the strikes started: “A short while ago, the Israeli Air Force struck military targets belonging to the Iranian terror regime in western and central Iran.” It did not elaborate.

Earlier, Israel said its air defence were intercepting Iranian missiles after Tehran warned it would attack Israel as a response to Israeli strikes on Beirut.