Hezbollah fired more than 60 projectiles into Israel before noon on Sunday, a day after an Israeli attack in the heart of the Lebanese capital killed at least 20 people.
More than 65 people were injured in the attack in the Lebanese capital Beirut on Saturday. Three Israeli defense officials said the attack was an attempt to kill Hezbollah's top military commander, Mohammad Haidar. One of the Israeli defense officials, who requested anonymity to discuss sensitive military operations, later said that Mr. Haidar had not been killed.
On Sunday, waves of air raid sirens blared across much of northern Israel, including the hilltop town of Safed. The Israeli military said some projectiles – a term commonly referring to rockets – were intercepted by air defense systems.
Magen David Adom, an Israeli emergency service, said it treated a woman in northern Israel who suffered a shrapnel wound.
Hezbollah said it fired four rocket salvos into Israel and one at a group of Israeli soldiers in Lebanon on Sunday.
The firefight came as the Israeli army said it struck a militant infrastructure next to a border crossing between Syria and Lebanon. It also ordered the evacuation of five villages in southern Lebanon.
The Israeli military has intensified operations against Hezbollah in Lebanon, apparently in an attempt to pressure the militant group into a ceasefire. As its forces push deeper into southern Lebanon, the Israeli army has stepped up bombing of the Dahiya, a cluster of neighborhoods on Beirut's southern outskirts that are effectively controlled by Hezbollah.
Terms for a ceasefire between Israel and Hezbollah appear to be taking shape, according to several regional and U.S. officials briefed on the diplomacy. Despite a degree of cautious optimism, officials warned that crucial details around implementation and enforcement needed to be worked out and that disagreements could still hinder any deal.
Both Israel and Hezbollah have said they will continue fighting as negotiations continue.