Israel-Gaza-Lebanon updates: US helps shoot down missiles in Iranian barrage

The Islamic Revolutionary Guard Corps said moments ago the missile attack was a retaliation for different assassinations carried out by Israel, Mehr News Agency reported.

The IRGC said the operation will continue if Israel does not stop, Mehr News Agency reported.

Hassan Nasrallah, the leader of Hezbollah, a key ally of Iran, was killed in a strike in Beirut last week, while a top member of the IRGC was also killed.

Israel Defense Forces spokesman Daniel Hagari issued remarks Tuesday evening, announcing that missiles had been launched from Iran toward Israel.

He said messages have been sent to cellphones, warning Israeli citizens in certain areas to enter "protected space" and to seek shelter if they hear sirens.

Hagari added that if citizens hear explosions, they may be the result of interceptions or impacts.

"We are strong and can handle this event as well," Hagari said. "The IDF is doing and will continue to do everything necessary to protect the civilians of Israel. The IDF is fully prepared for both defense and offense at peak readiness."

-ABC News' Jordana Miller

Several flights near Iran are diverting ahead of expected missile launches at targets in Israel.

Several Lufthansa flights and one Swiss Air flight were diverted back to Frankfurt, Germany, and Turkey as they approached Iranian air space.

-ABC News' Sam Sweeney

Israel said missiles have been launched from Iran toward Israel.

Sirens are sounding across the country.