Published: May 01, 2013 11:53 AM EDT

BAGRAM AIR FORCE BASE- Investigators are still trying to figure out why a US cargo plane in Afghanistan crashed, killing seven Americans on board.

The crash occurred just after take-off on Monday when a Dubai-bound Boeing 7-47 was leaving Bagram Air Base.

Six of the victims were from Michigan and a seventh was from Kentucky.

The Taliban quickly claimed responsibility for the crash, but NATO determined that those claims were false.