Rubble surrounds the Kurdish PUK Party's offices in Kirkuk after a car bomb explosion here killed at least three people.<br/> <br />Several others were injured in the blast.<br/> <br />Police have also confirmed that in a separate attack in Kirkuk, one Kurdish security guard was killed as a second car bomb targeted a convoy of Kurdish fighters.<br/> <br />A third blast around 67 km south of Kirkuk killed another member of the Kurdish security forces.<br/> <br />No group has yet claimed responsibility for the blasts.<br/> <br />Iraq has grown more volatile as the civil war in neighboring Syria strains fragile relations between Sunni and Shi'ite Muslims, and increases tension in the country's largely Kurdish north.
