Police are hunting three men who stole cash and cigarettes from a Sheffield shop before driving off on scooters.
They struck at a convenience store on Retford Road, Woodhouse, at 8.10pm on Monday.
The granddaughter of a woman working in the store at the time said she was he;d up at 'sword point'.
Posting on Facebook, she asked people for information.
Call South Yorkshire Police on 101.