ISIS has claimed responsibility for a deadly explosion that resulted in several reported casualties in a Syrian city where US soldiers are deployed in the area, a militia controlling the city and a UK-based monitoring group said Wednesday.

The ISIS-affiliated Amaq agency said the attack was carried out by a suicide bomber with an explosive vest.

“An explosion in Manbij’s busy market street, initial reports of casualties,” Spokesman of the Manbij military council Shervan Darwish wrote on Twitter.