A suicide car bomber attacked a security checkpoint in central Baghdad on Monday, killing at least two people and wounding six others close to the Green Zone government compound, police said. Police said the wounded included three civilians and three policemen. Witnesses told al-Iraqiya state television that three people had been killed. Reuters reporters in the area heard two more blasts a few minutes afterwards. Police said a roadside bomb had exploded in the al-Waziriya area but they had no information on casualties.