At least three synchronized explosions Thursday rocked the centre of the Iraqi capital Baghdad, said security officials, dpa reported.
The blasts occurred near the Foreign Ministry offices in the area of Alawi al-Hala, they added.
There were no immediate reports of casualties.
Iraq has witnessed near-daily attacks since US troops withdrew in December 2011, raising fears of a return to the sectarian tensions that drove the country close to civil war in 2006 and 2007.
The violence comes at time of a widening crisis between the Shiite-led government and the country's Sunni minority.