Syrian officers reports that Syrian Army kills senior Saudi Arabian al-Qaeda commander Abu Malik al-Shahri, who is known as 'Bin Laden of Syria', in outskirt of Latakia.
Abu Mohammad al-Julani, the leader of Al-Nusra Front, announces that the group is splitting from Al-Qaeda with their approval and that new operations will be carried out under the name Jabhat Fateh al-Sham.
Saudi Arabia is sending troops and fighter jets to Turkey's Incirlik Air Base ahead of a planned ground invasion of Syria. Turkey's Minister of Foreign Affairs Mevlüt Çavuşoğlu confirmed the deployment in Adana near the Syria–Turkey border, but said the numbers had not been confirmed.
Russian airstrikes on an Al-Nusra Front (Al-Qaeda's branch in Syria)-run prison complex in the northern town of Maarrat al-Nu'man, Idlib, leaves nearly 60 people dead. Most of those killed were rebels imprisoned by Al-Nusra, according to the Syrian Observatory for Human Rights.
In talks held regarding the course of the Syrian Civil War, Russia and Saudi Arabia fail to reach agreement over cooperation in the fight against ISIL, with the Saudi representative refusing any common struggle with Assad's regime.
In response to the Syrian civil war, the Fourth Extraordinary Session of the Islamic Summit organized by the Organisation of Islamic Cooperation begins in Makkah Al Mukarramah, Saudi Arabia, for two days.
President of the United States Barack Obama announces in a special TV broadcast that Osama bin Laden, the founder and leader of the militant Islamist group Al-Qaeda and the most-wanted fugitive on the FBI's Ten Most Wanted Fugitives, was killed on May 2 (Pakistan Standard Time) during an American military operation in Abbottabad, near Islamabad, Pakistan and that his body is in U.S. custody.