Hezbollah pounded northern Israel with 140 rockets Friday, a day after the militant group’s leader vowed to retaliate against Israel for a mass bombing attack, the Israeli military and the militant group said.

Israel has claimed the death of a senior Hezbollah military official after a rare Israeli airstrike in Beirut killed at least 37 people and wounded dozens more, shortly after Hezbollah pounded northern Israel with 140 rockets.