Four crew members from Tajikistan were killed on 11th February 2012 when their helicopter crashed in Zabul province during a food supply flight for ISAF troops operating in the area.
The Russian-built EY-106 helicopter belonged to the global logistic company Supreme Group, which provides services for NATO and ISAF in Afghanistan.
The cause of the crash is being investigated and is thought to have been caused by a technical malfunction. There was no reported enemy activity in the area at the time of the crash. "Investigations as to the cause of the crash are ongoing but no other parties appear to have been involved in the incident," the company, Supreme Group, said in a statement.