Afghan bomb blast kills US-led troops

An improvised explosive device has left at least two US-led soldiers dead in southern Afghanistan as the war claims more lives of foreign troops.

NATO said the soldiers were killed on Sunday, without giving further details, the Associated Press reported.

The nationalities of those killed are not generally released until after the next of kin have been contacted.

More than 530 US-led troops have lost their lives in war-ravaged Afghanistan so far this year, making 2010 the deadliest year for NATO since the war began nine years ago.

The total US and NATO casualties in the past 20 months are more than the entire death toll in the first seven years of the war.

Last December, US President Barack Obama ordered an extra 30,000 forces for Afghanistan. Despite the surge, violence has been increasing in the country, claiming the lives of both Afghan civilians and foreign troops.