The Islamic State group claimed responsibility for a deadly suicide bombing on Saturday in the Afghan capital that killed at least 18 people and wounded dozens more, according to a report from Reuters.A suicide bomber detonated explosives after he was stopped by security guards while trying to enter the Kawsar-e Danish educational center in a predominantly Shiite neighborhood in western Kabul, Al Jazeera reported.Eyewitnesses told Afghan news network TOLOnews that dozens of teenage students were in class when the attack happened; videos posted on social media showed many were injured.