Four NATO soldiers have been killed in bomb blasts in southern Afghanistan

Four NATO soldiers have been killed in bomb blasts in southern Afghanistan, the International Security Assistance Force said Sunday.
  
The soldiers died "following separate improvised explosive device attacks" on Saturday, ISAF said in a statement, without providing further details or their nationalities.
  
The latest deaths take the toll among NATO troops in Afghanistan this year to 169 and the total in 10 years of war to 3,016, according to an AFP count based on records kept by icasualties.org.