Citing a Lebanese security source, Reuters stated that the explosives were planted inside the compact communication devices, allegedly by Mossad—Israel's spy agency. Israel, however, has not responded to Lebanon's claims so far.

A series of explosive pager blasts in Lebanon killed at least nine people and injured nearly 3,000. The coordinated attack was part of an Israeli operation targeting Hezbollah members. The pagers were made by a Hungarian shell company and imported from Taiwan.

The leader of Hezbollah vowed to retaliate for this week’s deadly attacks on the group’s communications devices

Israel’s attack on Hezbollah’s communication devices raised expectations of a decisive shift in their war of attrition. Instead, the fighting has returned to a standoff.

It took years, three different shell companies, and an explosive called pentaerythritol tetranitrate, according to reports.

U.N. peacekeepers in Lebanon urged immediate de-escalation as hostilities rumbled on at the Lebanese-Israeli border on Friday, following Israel's most intense airstrikes in nearly a year of conflict with the Iran-backed Hezbollah.

Hezbollah admits Israel dealt a severe blow with exploding pagers and walkie talkies, but neither side seems to heed U.S. calls to avoid a wider war.

Israel’s operation against Hezbollah members in Lebanon and Syria through booby-trapped pagers and walkie-talkies was years in the making, and its use now ramped up a high-risk campaign aimed at deeply disrupting the group.

Israel launched a series of strikes on Hezbollah targets Thursday as the war against the Lebanon-based group widened in the wake of two consecutive days of deadly explosions triggered in wireless devices.