Missiles have been launched from Iran toward Israel and sirens are sounding across the country, according to a statement from Israel’s military.

CNN teams on the ground in multiple locations across Israel have observed dozens of missiles flying above them. Some have been intercepted by Israel’s air defenses, although it is not clear how many.

Iran’s Islamic Revolutionary Guard Corps (IRGC) said it targeted Israel in response to the killing of Hezbollah leader Hassan Nasrallah and others, according to Iran’s semi-official Tasnim news agency.

After the barrage of missiles was launched, the Iranian mission to the United Nations said that Tehran carried out a response to “the terrorist acts of the Zionist regime”.

The mission said on X that if Israel should “dare to respond or commit further acts of malevolence, a subsequent and crushing response will ensue”.

Earlier on Tuesday the White House warned that Iran was poised to launch a ballistic missile attack on Israel soon, instantly ratcheting up fears of all-out war in the region.

People in Tel Aviv and other cities have been told to stay near shelters or other protected areas and the atmosphere on the streets was noticeably tense.