Five US troops die in blasts in southern Afghanistan

Five American service members died Saturday in bombings in southern Afghanistan where international forces are stepping up the fight against the Taliban, officials said.

Four of the victims died in a single blast, NATO said in a statement without specifying nationalities nor providing further details. A fifth service member was killed in a separate attack in the south, NATO said.

US officials confirmed all five were Americans. The officials spoke on condition of anonymity under rules regarding casualty identification.

The latest deaths bring to 70 the number of international troops killed in Afghanistan this month, including 53 Americans.

The US-led force is ramping up operations against the Taliban in their southern strongholds, hoping to enable the Afghan government to expand its control in the volatile region.

Rising casualty tolls, however, are eroding support for the war even as President Barack Obama has send thousands of reinforcements to try to turn back the Taliban.

On Tuesday, an international conference in Kabul endorsed President Hamid Karzai's plan for Afghan security forces to assume responsibility for protecting the country by the end of 2014. Obama has pledged to begin removing US troops starting in July 2011, although he has linked the drawdown to security conditions on the ground.

Afghanistan is due to hold national parliamentary elections Sept. 18 despite fears that they could provoke a surge in Taliban attacks.

Also Saturday, the Afghan Interior Ministry reported that five Afghan civilians were killed by a bomb in the Chora district of Uruzgan province. A total of seven militants died in clashes with Afghan and international forces since Friday night in the provinces of Khost, Uruzgan and Kunar, the ministry added without giving further details.

Elsewhere, NATO said it was looking into conflicting reports of civilian casualties following a battle between international troops and Taliban fighters in southern Afghanistan.

In Kandahar, a man named Abdul Ghafaar said he brought seven children to the city's Mirwais hospital after getting caught in crossfire Friday between NATO and Taliban forces in Sangin, a flash-point town in neighboring Helmand province.

Another man, Marjan Agha, said that he also brought injured people from Sangin and that the fight started Friday afternoon after civilians were caught between coalition and insurgent fighters. He said villagers began walking with a white flag toward NATO forces but shots rang out and two people were killed on the spot.

The NATO-led command it was aware of reports of civilian casualties in Sangin but said in a statement that it had "no operational reporting that correlates to this alleged incident."