A day later, a similar attack struck walkie-talkies. In total, the explosions killed at least 37 people and injured more than 3,000, many of them civilians. Israel is widely believed to be behind the blasts, although it has neither confirmed nor denied responsibility.

Israel said it struck hundreds of targets in Lebanon, hours after Hezbollah’s leader vowed to retaliate for two “unprecedented” rounds of attacks targeting its operatives’ communication devices. Israel has not commented on the explosion of thousands of Hezbollah pagers and radios,

Israel carried out one of the most intense bombardments of the past year, as warplanes launched 70 airstrikes, Lebanese security officials said. The barrage came shortly after Hezbollah’s leader vowed to respond after explosions of pagers and walkie-talkies killed at least 37 people.

U.S. officials say Israel warned U.S. Defense Secretary Lloyd Austin in a call Tuesday that a military operation was going to take place in Lebanon

Additional explosions linked to electronic devices caused more deaths and injuries a day after pagers used by Hezbollah exploded, wounding thousands.

Hezbollah officials and Lebanon's state media say explosions went off in Beirut and multiple parts of Lebanon. Officials said that walkie-talkies and even solar equipment detonated a day after hundreds of pagers blew up.

At least 20 people have been killed and more than 450 others wounded by a second wave of explosions from wireless communication devices in Lebanon, the country’s health ministry says. Reports say a large number of walkie-talkies used by the armed group Hezbollah blew up in the southern suburbs of the capital Beirut,