More than ten people, including members of the Syrian Democratic Forces (SDF), were killed on Tuesday when a car bomb explosion rocked the city of Raqqa, an incident which underlines the continued threat of Islamic State (ISIS) sleeper cells in northeastern Syria.
Four SDF fighters were killed after they gathered at the scene of a first explosion which was followed by a second, larger blast, Reuters reported.
Sources added that at least five civilians were also killed, and four others injured, including women and children.
Soon after the explosions, ISIS claimed the attack saying its part of a military campaign they launched which they called “Vengeance for Sham”.
Despite the SDF and the US-led coalition announcing the defeat of ISIS caliphate on March 23, Islamic State sleeper cell attacks are ongoing as security forces continue to detain militants in previously liberated territories.