At least 20 people were killed and more than 450 others wounded, Lebanese officials said, a day after pagers exploded across the country and killed 12 people, in an attack widely attributed to Israel.

At least 14 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.

Walkie-talkies and solar equipment exploded in Beirut and other parts of Lebanon on Wednesday in an apparent second wave of attacks targeting devices a day after pagers used by Hezbollah blew up, state media and officials for the militant group said.