BEIRUT -- Wireless communication devices exploded on Wednesday in Beirut's southern suburbs and other areas in Lebanon, creating a state of anxiety among residents, local media reported.

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,

The attacks offer a rare window into the inner-workings of Hezbollah — an organization that is notoriously secretive and deeply embedded in Lebanese society.

The Israeli military said it was striking Hezbollah targets in Lebanon on Thursday, shortly before the movement's leader was due to give a speech. It also said the military chief of staff had approved plans for Israel's north,