The Iran-backed group, whose leader Israel killed in an air strike on Friday, said its fighters launched a “rocket salvo” at Safed and a smaller location “in defence of Lebanon and its people and in response” to Israeli attacks on cities, villages and civilians.

The strike on power stations and a seaport, which killed four people, was the second known time that Israel has retaliated against the militant group’s attacks by striking in Yemen.

Israel struck power plants and a sea port in Yemen Sunday as the Israeli military continued an air campaign against Hezbollah in Lebanon.