Several people were killed when Iran fired a barrage of projectiles at Israel in retaliation for Israel's surprise attack on its foe’s nuclear facilities and military leadership. Follow along for live updates,

A series of loud explosions are heard in central Israel as the military says it carried out intelligence-based strikes in Tehran.

Iran launched dozens of ballistic missiles toward Israel on Friday night in retaliation for Israel's surprise attack early Friday. Israel struck at the heart of the Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

The Israeli attack, which comes amid an unprecedented exchange of strikes between Israel and Ansar Allah's Axis of Resistance coalition ally, Iran, was reported by a number of Israeli outlets as well as Saudi Arabia's Al-Hadath network.

Israel’s attack on Iran was long in the making – the result of years of meticulous planning by Israel and days of high-stakes talks between Tel Aviv and Washington, officials told CNN.

The head of the United Nations atomic agency, Rafael Grossi, said Iran told the agency that Israel attacked the Fordow enrichment plant on Friday, meaning Israel struck the three core sites of Iran's nuclear program.

The Lebanese militant group Hezbollah was long considered Iran’s first line of defense in case of a war with Israel.

Israel has conducted roughly 150 strikes on Iran over two days, while Iranian forces have fired roughly 200 ballistic missiles at Israeli territory in addition to scores of drones, according to an Israeli military official.