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.

Yemen's armed Houthi group said on Tuesday they launched drone strikes on "military targets" in Israel's Jaffa area and its port city of Eilat.

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.