A new round of airstrikes hit Beirut suburbs late on Sunday as Israel intensified its bombardment of northern Gaza and southern Lebanon in a widening war with Iran-allied militant groups across the region.

Palestinian officials said a strike on a mosque killed at least 19 people.

A year after Hamas' October 7 attack, Israel has opened a new front in Lebanon against Hezbollah, which has traded fire with Israel since the war in Gaza began.

Israel’s military confirmed a Hezbollah attack on the northern city of Haifa, though it was not immediately clear whether shrapnel from “fallen projectiles” was from rockets or interceptors. Hezbollah said it tried to hit a nearby naval base. The Magen David Adom ambulance service said it treated 10 people, most of them hurt by shrapnel.

Israel also has vowed to strike Iran after a ballistic missile attack on Israel last week.

The widening conflict risks further drawing in the United States, which has provided crucial military and diplomatic support to Israel. Iran-allied militant groups in Syria, Iraq and Yemen have joined in with long-distance strikes on Israel.

Israel is on high alert ahead of memorial events for the October 7 attack, while rallies continue around the world marking the anniversary.

Beirut’s skyline lit up again late Sunday with new airstrikes, a day after Israel’s heaviest bombardment of the southern suburbs known as the Dahiyeh since it escalated its air campaign on September 23. It was not immediately clear if there were casualties.

Israel confirmed the strikes and says it targets Hezbollah. The militant group, the strongest armed force in Lebanon, has called its months of firing rockets into Israel a show of support for the Palestinians.

A separate Israeli strike earlier Sunday in the town of Qamatiyeh southeast of Beirut killed six people, including three children, Lebanon’s Health Ministry said.

Lebanon’s state-run National News Agency reported more than 30 strikes overnight into Sunday, while Israel’s military said about 130 projectiles had crossed from Lebanon into Israeli territory. (AP)