Armed individuals riding motorcycles opened fire on the guards of the largest military base of the "International Coalition" in Deir ez-Zor areas on Monday, before fleeing to an unknown location. According to the Syrian Observatory for Human Rights, it is likely that the assailants who fired at the guards of the Omar oil field are affiliated with "ISIS." Hours after the attack, "International Coalition" forces conducted a military patrol consisting of 5 military vehicles accompanied by a vehicle from the Syrian Democratic Forces, according to the observatory.