At least 19 people have been killed in three separate bombings in Baghdad.
Security officials say one blast was caused by a female suicide bomber outside the heavily guarded Green Zone.
The attacks come days before parliament is to vote on a divisive military accord that could allow US troops to remain in Iraq until 2011.
In the first attack, 13 people, including nine women, were killed when a roadside bomb exploded near a bus carrying trade ministry employees in east Baghdad.
Five others were wounded in the attack.
Less than an hour later, a woman blew herself up in a corridor leading into the Green Zone, killing five.
The attack took place in an area where Iraqi employees were queuing to pass through security checkpoints.
In another attack in east Baghdad, a roadside bomb killed one person and wounded five others.
The latest attacks came as Iraq's parliament mulls a controversial security pact that would have US forces withdraw from all Iraqi cities by the end of June 2009 and from the country as a whole by the end of 2011.
Iraq's cabinet approved the pact, the product of nearly a year of intensive negotiations, more than a week ago, but the accord has drawn fire from hardline nationalists who have demanded that US troops leave sooner.
