Iran fired a massive salvo of ballistic missiles at Israel on Tuesday night, sending almost 10 million people into bomb shelters as projectiles and interceptors exploded in the skies above.

Soon after the attack, which was largely unsuccessful, Prime Minister Benjamin Netanyahu warned Tehran that it had made “a big mistake” and “will pay for it.”

Some 181 missiles were launched in the strike, according to Israeli officials. The Israel Defense Forces said that it intercepted “a large number” of them.

One Palestinian in the West Bank was reported killed and two Israelis were injured by falling shrapnel and debris that had caused damage and started fires in the area.

Explosions could be heard across much of Israel, from Jerusalem and the Jordan Valley. Reporters on state television lay flat on the ground during live broadcasts.

One rocket impacted a school in Gadera, in central Israel, and photos and videos from the scene showed severe damage to the school building, although nobody was injured. Maj. Gen. Rafi Milo, the Home Front Command chief, visited the site of the impact alongside first responders.

Israel’s air defenses were “effective,” the IDF said. The US also participated in the defense of Israel, both by detecting the threat from Iran ahead of time and intercepting some of the missiles, according to the military.

The IDF said there were “isolated” impacts in central Israel and several more impacts in southern Israel. It emphasized that there was no damage to the “competence” of the Israeli Air Force in the attack, and said the IAF’s planes, air defenses, and air traffic control were operating normally.