Both sides have accused each other of violating the deal; Hezbollah fired into Israel for the first time since the truce took effect, and Israel responded with airstrikes.

Hezbollah has claimed the first strike against Israel since a US-backed cease-fire plan came into effect less than a week ago, prompting Israeli officials to vow a strong response in the most serious threat so far to the truce with Lebanon.

The IDF said it conducted a strike on military infrastructure sites near the border crossings between Lebanon and Syria, calling it a response to cease-fire violations.

The Israeli military said on Monday it struck dozens of targets throughout Lebanon, shortly after Hezbollah accused Israel of violating a ceasefire agreement and fired missiles on an Israeli military position in the disputed Shebaa Farms area.

Under the agreement, Israeli troops would withdraw from southern Lebanon while Hezbollah would move its forces further away from the Israeli-Lebanon border.