The Israeli military said on Saturday that it killed an armed militant in the "security zone" under its control in south Lebanon.

"Earlier today (Saturday), IDF (Israeli army) soldiers identified an armed terrorist operating inside the Security Zone, in the Majdal Zoun area in southern Lebanon," the military said in a statement, adding that troops "opened fire at" the militant and, after conducting "extensive searches", then "eliminated" him.

Representatives of Tehran-backed militant groups attended the funeral ceremonies of slain Iranian supreme leader Ali Khamenei on Saturday, with envoys from Hezbollah and Hamas meeting with Foreign Minister Abbas Araghchi, state media reported.

Tehran has for years provided support to Palestinian Hamas, Lebanon's Hezbollah and Yemen's Houthi rebels -- all designated "terrorist" groups by the United States and other Western nations, making Iran the target of international sanctions.

Iran's ambassador to China insisted that new fees would be charged to ships transiting the Strait of Hormuz -- an idea rejected by Washington -- while assuring that "friendly" nations would receive special treatment.

The initial deal struck between Iran and the United States to end their war stipulated that commercial ships would transit the strait free of charge for 60 days, but it remains unclear what will be in place after that period.

Israel's Benjamin Netanyahu could visit the White House as early as next week, U.S. President Donald Trump told Axios, adding that the prime minister "knows who the boss is" in their relationship.

The possible meeting comes amid reports of tensions between the two leaders over efforts to end the war against Iran that the U.S. and Israel started in late February.

Prayers were held Sunday over the casket of Iran's late supreme leader Ali Khamenei, the second day of funeral ceremonies that have drawn huge crowds to pay their final respects in Tehran.

Khamenei ruled the Islamic republic from 1989 until he was killed aged 86 in an airstrike on the first day of the U.S.-Israeli war with Iran on February 28.

More than 640,000 displaced people in Lebanon have returned home, according to the International Organization for Migration (IOM), as clashes between Hezbollah and Israel have wound down following a deal to end the Middle East war.

Yemen's Houthis threatened Saudi airports and vital assets should Riyadh violate its airspace or attempt to attack it, as the rebels accused the kingdom of trying to stop an Iranian plane from landing.

Israeli Prime Minister Benjamin Netanyahu and U.S. President Donald Trump spoke on Friday and agreed to meet "soon" in the United States, the premier's office said.

Mourners beat their chests and chanted "revenge, revenge" as thousands gathered in Tehran early Saturday for a final farewell to slain supreme leader Ayatollah Ali Khamenei.

A bomb went off at a cafe in central Damascus on Thursday, killing at least five people and wounding 16, Syrian authorities said.

The blast took place near the capital's Palace of Justice, a key government building, sparking scenes of panic in the busy area.