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.

U.N. peacekeepers in Lebanon urged immediate de-escalation as hostilities rumbled on at the Lebanese-Israeli border on Friday, following Israel's most intense airstrikes in nearly a year of conflict with the Iran-backed Hezbollah.

Explosions went off in Beirut and multiple parts of Lebanon in an apparent second wave of detonations of electronic devices, officials said.

More explosions occurred in Lebanon Wednesday, one day after blasts targeting pagers injured thousands, state media and witnesses have reported.

Hezbollah officials and Lebanon's state media say explosions went off in Beirut and multiple parts of Lebanon in an apparent second wave of detonations of electronic devices. The officials and state media said Wednesday that walkie-talkies and even solar equipment detonated a day after hundreds of pagers blew up.