A preliminary investigation by Lebanese authorities into the communications devices that blew up in Lebanon this week found that they were implanted with explosives before arriving in the country, according to a letter sent to the U.

Additional explosions linked to electronic devices caused more deaths and injuries a day after pagers used by Hezbollah exploded, wounding thousands.

The Hezbollah militant group said it is conducting a "security and scientific investigation” into the explosion of pagers across Lebanon on Tuesday.

The walkie-talkies that exploded in Lebanon Wednesday have not been made for over a decade, according to Japan's Icom Inc. The company's brand name was on the devices.

The devices that exploded in Lebanon on Wednesday appear to be Icom IC-V82 transceivers A Japanese handheld radio manufacturer has distanced itself from walkie-talkies bearing its logo that exploded in Lebanon,

The explosions linked to the 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 wo