![FILE - in this Tuesday, May 14, 2013 file photo, a group of armed Kurdish fighters from the Kurdistan Workers Party (PKK) enter northern Iraq in the Heror area, northeast of Dahuk, 260 miles (430 kilometers) northwest of Baghdad, Iraq. A Kurdish rebel group says they are withdrawing from Iraq's Sinjar following threats of attack from Turkey. The Kurdistan Workers Party, or PKK, says in a statement Friday, March 23, 2018 the "Iraqi government's position and the fact that the Kurdish community had managed to organize itself" have removed security fears in the area. (AP Photo/Ceerwan Aziz, File)](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/WWSNJC4Y2NZ77XWGYVGHE3JGSI.jpg?smart=true&auth=c629865a379938895e036f1b6192b08737e518d89103de2626fac4efd95cf508&width=400&height=225)
Kurdish groups including the PKK have been carrying out operations against Turkey and its military for decades. AP
Kurdish groups including the PKK have been carrying out operations against Turkey and its military for decades. AP
Iraqi Kurdistan authorities hold suspects from PKK-linked group
Cell is accused of planning terrorist attacks against government officials in northern Iraq