"There were about four different incidents going on in Baghdad today, resulting in a total of three Iraqi police killed, six civilians killed, eight police wounded and nine civilians wounded," he said. 

He also said a "total of 19 enemy" were killed in clashes involving US forces and followers of Shia leader Muqtada al-Sadr. 

Eighteen of those were killed at the leader's stronghold in the Shia district of al-Sadr city when US forces moved to break up checkpoints put up by his forces there. 

And in central Baghdad, four men wearing the black of al-Sadr's Mahdi Army fired at police from the top of a building. 

Seizing key players

The clashes followed an operation hours earlier when US forces seized two key players in al-Sadr's Mahdi army, including a financier and a man responsible for eastern Baghdad operations, according to Kimmitt. 

Fighting has gone on for days between al-Sadr's men and the US-led occupation in Baghdad and in southern Iraqi cities. 

Al-Sadr is wanted over the murder of a rival leader last year.