Defense Secretary Lloyd Austin stressed that the United States was dedicated to a diplomatic resolution in Lebanon and urged Israel to improve "dire" conditions in Gaza, in a call Saturday with his Israeli counterpart.

Austin "reiterated US commitment to a diplomatic resolution in Lebanon that allows Israeli and Lebanese civilians to return safely to their homes on both sides of the border" in his call with Israel Katz, according to a Pentagon spokesperson.

Austin also "urged the Government of Israel to continue to take steps to improve the dire humanitarian conditions in Gaza and emphasized the US commitment to securing the release of all hostages, including US citizens."

Lebanon said Saturday that an Israeli air strike in the heart of Beirut that brought down a residential building and jolted residents across the city killed at least 11 people.

Israel stepped up its campaign against the Hezbollah militant group in late September, targeting its strongholds in Lebanon.

Lebanon's health ministry says at least 3,645 people have been killed since October 2023, when Hezbollah began trading fire with Israel in solidarity with its Palestinian ally Hamas.

The United Nations and others have repeatedly decried humanitarian conditions, particularly in northern Gaza, where Israel said Friday it had killed two commanders involved in Hamas's 7 October, 2023 attack.

In the call with Katz, Austin also discussed ongoing Israeli operations and reaffirmed Washington's "ironclad commitment to Israel's security," the Pentagon said.