Eleven people were killed on Thursday in a Black Hawk helicopter crash in southern Afghanistan, including seven U.S. invaders and three Afghan puppets.

"The crash resulted in the deaths of four International Security Assistance Force service members, three United States Forces-Afghanistan service members, three members of the Afghan National Security Forces, and one Afghan civilian interpreter," ISAF said.

The cause of the crash, which was in the Shah Wali Kot district of the southern province of Kandahar, was under investigation, NATO said in a statement.

The NATO forces often conceal whenever receiving blows from the Taliban and they usually conceal their causalities and are quick to announce technical problem for any plane crash in Afghanistan involving the death of foreign troops.

A spokesman for NATO said all the foreign troops on board the helicopter were American.

The Taliban asserted responsibility for shooting down the helicopter in a village on the outskirts of Tirinkot, the capital of central Uruzgan province.

The group’s spokesman Qari Yousaf said the militants brought down the copter with a rocket in Chinartu area. All those on board were killed as the helicopter caught fire after the crash.

The area where the helicopter went down is Taliban hotbed and supply route, lying north of Kandahar city near Zabul and Uruzgan provinces.

The Taliban shot down a CH-47 Chinook transport helicopter in August 2011, killing all 38 people on board, including 25 U.S. special operations soldiers.