Hezbollah did not immediately confirm the death of Ibrahim Aqeel. The United States had accused him of being involved in bombings that killed more than 200 U.S. Marines and many others in Beirut in 1983.

The attacks in southern Lebanon follow others on Hezbollah rocket launchers and infrastructure, after Hezbollah vowed to respond to detonations of pagers and radios.

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.

Secretary of State Antony Blinken traveled to Egypt for fresh talks on an Israel-Hamas cease-fire, as tensions with Hezbollah persist at the Israel-Lebanon border in the wake of the shocking explosions of wireless devices.

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.

It is uncharted territory in the conflict between Israel and the Hezbollah militant group after a deadly string of explosions affecting pagers and other devices in Lebanon reportedly killed several people and injured hundreds.

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.