US troops killed in Afghan helicopter crash

Six American troops died on Tuesday when the helicopter they were travelling in crash-landed in southern Afghanistan. 

Officials from International Security Assistance Force (ISAF) command are investigating the circumstances surrounding the crash, according to a statement from command headquarters in Kabul. 

Aside from the six U.S. fatalities, one crew member aboard the combat helicopter survived the crash and was transported to nearby medical facilities, according to The Associated Press

The helicopter went down in Zabul Province in southern Afghanistan while conducting operations in the area, Deputy Provincial Governor Mohammad Jan Rasoolyar told the AP.

The Taliban claimed responsibility for the crash, saying Talib fighters had shot down the helicopter as it traveled across the Shahjoi district in Zabul, according to an online statement by the group. 

However, ISAF officials said that there was no enemy activity in that district at the time of the incident. 

In 2011, 30 Americans, including 22 members of the Navy's elite SEAL Team 6, were killed in a fatal helicopter crash in Afghanistan. 

The CH-47 Chinoook was hit with a rocket-propelled grenade as it attempted to extract an Army Ranger team under fire by Taliban fighters. 

On Monday, the House Oversight subcommittee on National Security, led by Rep. Jason ChaffetzJason ChaffetzHouse Oversight slams TSA after report says officials 'interfered' in disciplinary case Gowdy steps down from Ethics Committee, citing 'challenging workload' Criminal referrals by members of Congress raise procedural questions MORE (R-Utah), announced plans to hold congressional hearings to investigate the 2011 crash. 

The Chinook shoot down remains the single largest loss of life for U.S. and coalition forces during the 12-year Afghan war.