(DAILYMAIL) — A masked gunman forced a 73-year-old grandmother to rob a bank after strapping a bomb to her ankle while tying up her husband at their home, it has been claimed.

Betty Davis was allegedly warned by the crazed man: ‘All I’ve got to do is push this button if you don’t do it right.’

But, rather than take any money, she instead informed staff at the Arvest Bank in Fayetteville, Arkansas, that she was carrying the device and allowed them to evacuate the building.

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