Beirut: Rebels battling jihadists in northern Syria have killed or captured scores of the militants loyal to an al Qaeda affiliate in two days of fighting, a watchdog said on Saturday. "At least 36 members and supporters of the Islamic State of Iraq and the Levant (ISIL) have been killed since Friday in Idlib (northwestern province) and more than 100 have been captured by rebels" in Idlib and Aleppo, the Syrian Observatory for Human Rights said.