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.

The Israeli military says Hezbollah has fired into a disputed border zone, the group's first attack since a ceasefire took hold last week

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.

Hezbollah fired into a disputed border zone held by Israel on Monday, the militant group’s first attack since its ceasefire with Israel took hold last week, after Lebanon accused Israel of violating the truce more than 50 times in recent days.

Hezbollah, Israel trade strikes as the cease-fire hangs in the balance. Bloomberg's Nick Wadhams reports. (Source: Bloomberg)

Hezbollah fired Monday evening at an Israeli Army post in a south Lebanon border area in a first such response to alleged repeated Israeli violations of a cease-fire agreement achieved last week.

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.