Iran launched multiple deadly waves of missiles and drones toward Israel into Saturday morning following Israel’s unprecedented strikes aimed at destroying Iran’s nuclear program and decapitating its military leadership.

The two powers have been exchanging barrages since Israel attacked Iran early Friday and killed many of the country’s top military leaders and scientists.

Explosions were heard in the Iranian capital, Tehran, as Israel launched a preemptive strike. Israel is under a state of emergency, as Iran retaliated Friday night with missile attacks.