A Saudi wanted on "terror-related" charges has been killed in a gun battle with security forces in a Shiite village, the Sunni-dominated kingdom's interior ministry said on Sunday.

Basem Ali Mohammed al-Gidaihi "died yesterday (Saturday) afternoon," ministry spokesman General Mansur al-Turki told AFP.

Apparent U.S. missile strikes killed at least seven civilians in northwestern Syria, a watchdog group said Sunday, calling for a probe into possible violations of the laws of war.

Amid unverified claims of civilian casualties from U.S.-led air raids targeting the Islamic State group in Syria, Pentagon spokesman Rear Admiral John Kirby said Thursday that the American military has "no credible reporting from operations sources" of civilians killed.

Iraqi pro-government forces backed by warplanes on Sunday repelled a jihadist attack on a strategic town only 40 kilometers (25 miles) west of the capital Baghdad, security sources said.

The Islamic State (IS) group attacked Amriyat al-Fallujah at around 1:00 am (2200 GMT on Saturday), local police chief Aref al-Janabi told AFP.

U.S.-led coalition warplanes on Sunday kept up their strikes against oil sites in Syria that fund the Islamic State group, as well as targeting the jihadists' command structure.

The air raids came a day after Al-Qaida's Syria affiliate threatened reprisals after a key operative was reported killed.

Israeli Prime Minister Benjamin Netanyahu headed to New York on Sunday, vowing to expose "slander and lies" laid out by Palestinian President Mahmud Abbas in his UN speech.

In a Friday address to the U.N. General Assembly, Abbas accused Israel of carrying out a "genocidal crime" in its 50-day war against Gaza militants in which nearly 2,200 Palestinians, mostly civilians, were killed.

A jihadist who once fought in the Khorasan group offered messages of condolences on Twitter over the death of the Al-Qaida offshoot group's alleged leader, the SITE monitoring group said Saturday.

The messages appeared to provide confirmation that U.S. airstrikes in Syria might have killed Khorasan leader Muhsin al-Fadhli, a long-standing Qaida operative.

Germany will host an international conference next month to mobilize aid for Syrian refugees after the launch of U.S.-led airstrikes, the foreign minister told the United Nations on Saturday.

Millions of Syrians have fled to neighboring countries and beyond, driven from their homes in three-year war and the recent offensive by jihadists.

Al-Nusra Front, al-Qaida's Syrian franchise, said Saturday that foreign air strikes on the war-torn country constitute a "war against Islam," and threatened to attack the worldwide interests of participating nations.

"These states have committed a horrible act that is going to put them on the list of jihadist targets throughout the world," said spokesman Abu Firas al-Suri in a video posted online.

The Iraqi army and an alliance of Shiite militia groups on Saturday retook a dam northeast of Baghdad after days of fighting believed to have killed dozens, security sources said.

Fighting has been raging for days around Muqdadiyah, in Diyala province, around 90 kilometers (55 miles) from Baghdad, between jihadists from the Islamic State group and pro-government forces. 

National Security Adviser Susan Rice reaffirmed U.S. commitment to supporting Syria's moderate opposition at a meeting in Washington with a delegation from the Syrian National Coalition, the White House said Saturday.

The Friday meeting came as the United States and coalition partners broaden air strikes against the Islamic State group in Syria, with a defense official telling Agence France-Presse that "near continuous" combat sorties were being conducted there, as in Iraq.