( CNN ) -- A cargo plane crashed in Afghanistan killing all seven crew members on board Monday . All seven were U.S. citizens , the cargo carrier National Airlines said . The crash happened shortly after takeoff from Bagram Air Base in Afghanistan , the U.S.-based company said . The Boeing 747-400 was en route to Dubai , United Arab Emirates . `` This was a purely cargo flight and no passengers were aboard , '' a company statement said . `` Cargo consisted of vehicles and routine general cargo . '' National specializes in moving freight for the military and businesses , as well as charter passenger service in the Middle East . The cause of the crash has not been determined . But Taliban spokesman Zabiullah Mujahid said his group shot down the aircraft and that `` several foreign soldiers were killed . '' That claim could not be immediately verified . But in the past , the Taliban has exaggerated casualty figures . `` This is a devastating loss for our family and we 'll work diligently with authorities to find the cause , '' National Airlines President Glen Joerger said in the statement . `` Our focus at this time is on the family members of those we 've lost , and on assisting the NTSB ( National Transportation Safety Board ) and Afghanistan Civil Aviation Authority in their investigations . '' Six of the victims were from Michigan , National said , and they were identified as Brad Hasler , Jeremy Lipka , Jamie Brokaw , Rinku Summan , Michael Sheets and Gary Stockdale . The other victim , Timothy Garrett , was from Kentucky .
New : The victims are identified . Taliban 7 were crew members ; there were no passengers . The National Airlines : All claim responsibility , but the claim ca n't be verified immediately . The flight was en route from Bagram Air Base in Dubai to Afghanistan .