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.

Multiple explosions occurred Wednesday at the site of a funeral for three Hezbollah members and a child killed by exploding pagers the day before.

At least nine people have been killed and more than 300 others wounded by a second wave of explosions from wireless communication devices in Lebanon, the country’s health ministry says. Media reports say walkie-talkies used by the armed group Hezbollah blew up in the southern suburbs of the capital Beirut,