Mortar rounds struck an Iraqi army base west of Baghdad on Monday, killing four officers and two soldiers

Mortar rounds struck an Iraqi army base west of Baghdad on Monday, killing four officers and two soldiers, security officials said.
  
A brigade commander was among the dead in the attack, which took place in the Abu Ghraib area, the sources said.
  
The deaths came two days after five senior officers, including a division commander, and 10 soldiers were killed during an operation against militants in the western province of Anbar.
  
On Sunday, Prime Minister Nuri al-Maliki said that a protest camp in Anbar had become a "headquarters for the leadership of Al-Qaeda," calling on legitimate protesters to leave before security forces move in.