Hezbollah rockets hit Israel's third largest city Haifa early on Monday as the country looked poised to expand ground incursions into southern Lebanon on the first anniversary of the Gaza war, which has spread conflict across the Middle East.

Iran-backed Hezbollah, an ally of Hamas, the Palestinian militant group fighting Israel in Gaza, said it targeted a military base south of Haifa with "Fadi 1" missiles and launched another attack on Tiberias, 65 km (40 miles) away.

The spiralling conflict has raised concerns that the United States, Israel's superpower ally, and Iran will be sucked into a wider war in the oil-producing Middle East.

Israeli police confirmed that rockets had struck Haifa, also a major port, and local media said 10 people were wounded there.

An Israeli military statement said five rockets were launched at Haifa from Lebanon and interceptors were fired at them. "Fallen projectiles were identified in the area. The incident is under review."

It said 15 other rockets were fired inland at Tiberias in Israel's northern Galilee region, some of which were shot down. Israel media said a further five rockets hit the Tiberias area.

Police said some buildings and properties were damaged, and there were reports of minor injuries, with some people taken to a nearby hospital.

Israel also intercepted two drones launched early on Monday from the east after sirens blared in the central areas of Rishon Lezion and Palmachim, the military said.

It gave no further details of the source of the drone fire on the first anniversary of the shock cross-border Oct. 7 attack on Israel by Hamas-led militants that ignited the war in Gaza.

Hamas meanwhile targeted Israel's commercial capital Tel Aviv with a missile salvo, the group said, setting off sirens in central areas of the country.

Many Israelis, demoralised by the catastrophic security failures surrounding Hamas' incursion from Gaza a year ago, have regained confidence in their long vaunted military and intelligence apparatus after a series of deadly blows to the command structure of Hezbollah, Iran's most formidable proxy force in the Middle East, in Lebanon in recent weeks.

Beirut's densely populated southern suburbs were again pounded by airstrikes overnight as Israel extended an aerial campaign on the area where Hezbollah has its headquarters.

Israel accuses the militant Shi'ite Muslim movement of deliberately embedding its command centres and weaponry beneath residential buildings in the heart of Beirut. Hezbollah denies storing weapons among civilians.

Israeli airstrikes have displaced 1.2 million people in Lebanon and as the bombing campaign intensifies, many are afraid that Lebanon will face the vast scale of destructionwrought on Gaza by Israel's air and ground onslaught.

"I never expected we were going to get here. Israel is done with Palestine, they now want to come here too?" said displaced Lebanese man Mohammed Kanso.

He said he had been sleeping in the street for 10 days after having been uprooted by Israeli military actions and did not have cash to buy medicine for himself or his son.

Israel-Hezbollah conflict spreads

Hezbollah began launching rockets at Israel on Oct. 8, 2023 in solidarity with Hamas. After a year of exchanges of fire between Hezbollah and Israel mostly limited to the frontier region, the conflict has significantly escalated in Lebanon.

Israel has carried out ground incursions into Lebanon's south, which Hezbollah says it has repelled.

Israelis marked the first anniversary of the Hamas attack with ceremonies and protests on Monday, including a memorial event for victims of the Nova Music Festival where militants killed 364 people and kidnapped 44 party goers and staff.

In their shock rampage through Israeli towns and kibbutz villages near the Gaza border a year ago, Hamas-led militants killed some 1,200 people and took about 250 hostages back to Gaza, according to Israeli figures.

The huge security lapse led to the single deadliest day for Jews since the Nazi Holocaust, shattered many citizens' sense of security and sent their faith in its leaders to new lows.

Most of the dead were civilians, including women, children and elderly people, killed in their homes, on the roads and at the site of the open-air Nova festival - as well as soldiers on army bases near the Gaza border.

The Hamas assault unleashed an Israeli offensive on Gaza that has largely flattened the densely populated enclave and killed almost 42,000 people, Palestinian health authorities say.

The Gaza war has given rise to a multi-front Middle East conflict, drawing in Iran's broader "Axis of Resistance" - Hezbollah, Yemen's Houthis, Iraqi militia groups - and sparking several rare, direct confrontations between Israel and Iran.

Another heavy air attack on Beirut is reported to have targeted Hashem Safieddine, who was widely seen as the heir apparent of Hezbollah leader Hassan Nasrallah who was killed by a bunker-busting attack on a Hezbollah command lair on Sept. 27.

Safieddine has not been heard from since Thursday.