NBC News' Matt Bradley reports from Israel where sirens rang out across Tel Aviv after missiles were reportedly launched from Iran. The order for residents to take cover was lifted about 15 minutes later.

Aerial attacks between Israel and Iran continued overnight into Monday, marking a fourth day of strikes following Israel's Friday attack. That surprise strike hit the heart of Iran's nuclear program, killing several nuclear scientists as well as high-ranking military leaders, according to Israeli officials.

"Another barrage of dozens of rockets was launched" towards Israel, the statement adds. The IDF says that the explosions people are hearing "originate from interceptions or impacts". We've been hearing from Iran's Supreme Leader Ali Khamenei who says Iran “will inflict heavy blows” after Israel “launched war”.