Meanwhile, another roadside bomb on Monday in central Baghdad's Nidhal street, apparently targeting a police patrol, wounded four  people, including a policeman, a police official said.  

Violent deaths in Iraq dropped by more than half in September  compared to the previous month, official figures showed last week, with 203 people killed across the country.  

September's death toll was the lowest since May, when a total of  155 people were killed.