Attacks targeting communications devices used by Hezbollah members in Lebanon appear to be the latest in a series of covert operations allegedly carried out by Israeli operatives.

Lebanese officials said that 12 people had been killed on Tuesday, including a young girl. Hezbollah said that at least eight of its fighters were among the day’s dead and more than 2,700 people were injured in Lebanon — including Iran’s ambassador to the country.

The simultaneous explosion of thousands of pagers used by Lebanese militia Hezbollah on Tuesday was the result of an unprecedented weaponization of a wireless paging system, in which rigged devices detonated upon receiving a coded signal transmitted by radio frequency.

Hundreds of wireless devices exploded at the same time across Lebanon on Tuesday, causing many to be injured and leading the Lebanese Health Ministry to advise people to stay away from their pager-like devices, multiple outlets reported.

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.

New explosions linked to electronic devices killed at least 20 people and injured more than 450 across Lebanon on Wednesday, a day after 12 people were killed and thousands wounded by exploding pagers used by members of the militant group Hezbollah in a suspected Israeli attack.

Lebanon’s health ministry said Wednesday that at least 20 people were killed and 450 others wounded by exploding electronic devices in multiple regions of the country. The explosions came a day after an apparent Israeli attack targeting pagers used by Hezbollah killed at least 12 and wounded nearly 3,

Walkie-talkies and other devices exploded suddenly Wednesday at the site of a funeral for three Hezbollah members and a child killed by exploding pagers the day before. Lebanon’s health ministry says at least nine people were killed and 300 were wounded.