Afghan helicopter crash kills 11 in Kandahar, Isaf says

A French Army mentor looks on as a Eurocopter AS 532 Cougar helicopter flies in Kabul on August 12, 2012
Image caption International forces in Afghanistan rely heavily on air transport

Eleven people have been killed after a Black Hawk helicopter carrying foreign troops crashed in southern Afghanistan, the Nato-led coalition force says.

Seven American soldiers and four Afghans died in the crash, the International Security Assistance Force (Isaf) said.

The helicopter came down in the Shah Wali Kot district of Kandahar province, the Afghan authorities said.

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Media captionBrigadier General Gunter Katz

Isaf said it was investigating the cause of the crash.

Three of the Afghans killed were members of the security forces, while one was a civilian interpreter, Isaf said in its statement.

The Taliban said it carried out the attack but its claim could not be verified. Correspondents say the group is prone to exaggeration.

Helicopter crashes are not uncommon in Afghanistan, where international forces depend heavily on air transport.

In August 2011, the Taliban shot down an American Chinook near Kabul, killing 30 Americans and eight Afghans in the deadliest single incident for US troops since the war began.

Foreign forces are due to hand over responsibility for security to their Afghan counterparts at the end of 2014.