Lebanon's civil defense agency said early on Sunday its regional facility in the southern city of Nabatieh had been destroyed by an Israeli strike.

Israel struck south Lebanon on Saturday despite a ceasefire as Hezbollah said its backer Tehran had pledged not to abandon the militant group.

Pakistan's Prime Minister Shehbaz Sharif said on Sunday he hoped his country could soon host the next round of peace talks between Iran and the United States.

U.S. Secretary of State Marco Rubio said an announcement was possible later Sunday on a deal with Iran that could formally end the Middle East war, insisting goals had been met.

The United States and Iran could strike a deal to end the Middle East war as early as Sunday, Washington's top diplomat said, while Tehran insisted the agreement would do nothing to limit its nuclear program.

A gunman opened fire near the White House on Saturday evening, with U.S. Secret Service agents killing the assailant in a shoot-out during which a bystander was also struck, authorities said.

U.S. President Donald Trump said Saturday a deal with Iran had been "largely negotiated," with the proposal including opening the crucial Strait of Hormuz, though the agreement was "subject to finalization."

Israel staged fresh airstrikes in Lebanon on Saturday after earlier raids killed 10 people, according to media and the government in Beirut, targeting an area near the Syrian border.

The U.S. announced unprecedented sanctions on two Lebanese officers on Thursday, accusing them of sharing intelligence with Hezbollah, which the Lebanese government is trying to disarm.

Tehran accused the United States of "excessive demands", Iranian media said on Saturday, as U.S. media reports raised the prospect that Washington was mulling new strikes and leaders of the Islamic republic considered the latest peace proposal.