kirkuk iraq car bomb kill one person injure ten kirkuk iraqi oil city local kurdish authorities plan hold referendum independence despite opposition central government region non-kurdish population blast target liquor store accord security source iraqi interior ministry statement describe attack terrorist aggression link tension cause kurdish plan hold vote sept. 25. kirkuk home sizeable arab turkmen populations lie outside official boundaries kurdistan region claim kurds central government baghdad kurdish peshmerga fighters seize kirkuk dispute territories iraqi army collapse face islamic state 2014 prevent oilfields fall militant hand car bomb kill one wound 10 dispute iraqi oil city