ISIL has claimed responsibility for bomb attacks on three restaurants in a predominately Kurdish area in northeast Syria, close to the Turkish border.
As many as 30 people have been killed with scores injured in the city
A local church said that 13 of the victims were Christians.
Kurdish fighters backed by US-air power have reclaimed swathes of territory from ISIL in Syria in recent weeks.
In response ISIL has carried out several suicide bomb attacks against Kurds in Qamishili.