A Florida woman is behind bars after police said she threatened to kill a supermarket clerk with a nail clipper.

Katricia Humphrey, 47, was arrested on Tuesday after she allegedly tried to rob a Sedano's supermarket in Sweetwater. During the alleged robbery , police said, Humphrey "armed herself with a nail clipper" and told the 70-year-old store clerk, "You will die." According to a criminal complaint reviewed by Law&Crime, the alleged altercation started when Humphrey tried to get a box of cigarettes that she said she would pay for later.

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Police said that the store clerk turned down Humphrey's request, which caused her to become "irate," and the c

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