"An AH-64E Apache attack helicopter based at Fort Hood crashed today in Salado. Two soldiers are confirmed deceased," the base said in a statement.

"Fort Hood personnel remain on scene working in coordination with local first responders."

The statement, which did provide details on what the aircraft was doing at the time of the crash, said the identities of the deceased were being witheld until after their next of kin are notified.

The deadly helicopter crash comes around two months after a US Air Force B-52 bomber crashed in California, killing all eight people on board.