One of ISIS emirs detained in Turkey

One of ISIS emirs detained in Turkey

Turkish authorities have detained four suspected senior ISIS extremists in an operation in Turkey's city of Izmir.

The suspects include the group's so-called "emir," or ruler, of Syria's Deir el-Zour, and its environs, Anadolu Agency said. It described the other three suspects as senior operatives within the extremist group.

Hurriyet newspaper said the four were captured as part of a joint operation by Turkey's intelligence agency and police anti-terrorism units.

The suspects were hiding among a group of Syrian refugees planning to cross into Europe, the newspaper reported.

The four are being questioned by anti-terrorism police in Izmir.