ISIS terrorist group killed 37 rival rebels during overnight battles in Syria's northern province of Aleppo, reported a monitor group.
Another 20 rebels have gone missing during the violent attack ISIS waged against the town of Um Housh in the northern countryside of Aleppo on Friday, according to the Syrian Observatory for Human Rights on monday.
ISIS initiated the attack through a suicide car bombing targeting the rebels' town posts, said the Observatory, adding that US-led anti-terror warplanes are believed to have struck ISIS in that area.
ISIS lost 10 militants in the attack, but gained control of the entire town from the rival group.