Blast kills 5, wounds dozens in rebel-held north Syria

An explosion rocked a rebel-held area in northern Syria across the border from Turkey late Sunday, killing at least five people and wounding dozens. The car bomb went off near the Bab al-Salameh border crossing with Turkey, the reports said. The area is controlled by Turkey-backed opposition fighters. The blast killed seven and wounded more than 60, including women and children, according to the Britain-based Syrian Observatory for Human Rights. The opposition war monitor said the blast was most likely carried out by the sleeper cells of the Islamic State group.