**Three US soldiers have been killed while fighting insurgents in southern Afghanistan, Nato officials say.**Nato’s International Security Assistance Force (Isaf) did not give any further details about the incident.
On Sunday, an American service member and two Afghan road construction workers were killed in separate attacks in southern Afghanistan.
Taliban militants often target Afghan and foreign troops in the south where the insurgency is at its strongest.
Earlier this month, a suicide bomber killed seven CIA agents at America’s Forward Operating Base Chapman near the eastern Afghan city of Khost.
US President Barack Obama announced last month that an additional 30,000 American troops would be deployed quickly in Afghanistan to fight the insurgency.
The reinforcements will take the total number of US troops in Afghanistan to more than 100,000.