Israeli strikes killed 22 people and injured more than 100 in central Beirut on Thursday, Lebanese authorities said, as a senior Hezbollah official evaded an Israeli assassination attempt in the city, according to three security sources.

In the country's south, at least two United Nations peacekeepers were injured when an Israeli tank fired at a watchtower at the force's main headquarters in Ras al-Naqoura, prompting the U.N. to say its personnel were facing increasing danger.

The conflict between Israel and Hezbollah erupted one year ago when the Iranian-backed group opened fire in support of Palestinian militant group Hamas at the start of the Gaza war.