BAGHDAD, Oct. 31 (Xinhua) -- An Iraqi police officer was killed by a suspect being questioned over Baghdad's twin suicide bombings last week, an Interior Ministry statement said Saturday.

    The incident at the Criminal Investigations Directorate resulted in the killing of an officer and the suspect, along with wounding another policeman.

    During the interrogation, a policeman offered the suspect water, but the suspect stole the policeman's gun and shot and wounded him; the suspect then fired on Major Arkan Hachim and killed him, the statement said.

    The suspect himself was seriously wounded and was later announced dead in hospital, the statement added.

    The statement did not reveal when the incident took place, but said the investigation is underway.

    Last Sunday, twin truck bombings rocked Baghdad's Salhiyah neighborhood, killing 155 people and wounding more than 500 others.

    The two attacks were the deadliest since suicide truck bomb attacks on Aug. 19 which targeted two Iraqi ministries killing and wounding some 1,300 Iraqis.