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.

The wave of exploding electronic devices used by Hezbollah members could be a prelude to a wider attack by Israel.

Officials in Lebanon reportedly have banned pagers and walkie-talkies from being brought onboard planes departing Beirut following explosions targeting Hezbollah.

The deadly Hezbollah-pager explosions are causing mounting distrust, with some Lebanon residents abandoning their electronic devices.