Gardaí in Boyle are investigating an aggravated burglary at Abbeytown Stores on Thursday evening.
At approximately 8.15pm a lone male wearing a balaclava, gloves and brandishing a knife held up the shop assistant.
He got away with an undisclosed sum of money.
Gardaí are currently studying CCTV footage and are appealing for the assistance of the public.
If you noticed any suspicious activity in the general Abbeytown/Warren area between 8pm and 9pm please contact Boyle Gardaí on 071 9664620