It happened in Neilstown shortly before 7.00am
A man has been arrested by gardaí investigating the robbery of a convenience store in Dublin.
It happened in Neilstown shortly before 7.00am on Saturday.
Two men, one in possession of a firearm, approached a male member of staff at the entrance of the shop.
They assaulted the man and fled the scene on foot with a quantity of cigarettes and alcohol.
Gardaí arrested one man, aged in his mid-40s, close to the scene.
He is currently being held at Ronanstown garda station under Section 4 of the Criminal Justice Act.
Gardaí say the second man remains at large.
They also located a firearm, a baton, cigarettes and alcohol in a follow-up search.
The injured man was taken to Tallaght Hospital with minor injuries, while the scene was preserved and technically examined.
Gardaí are appealing for witnesses - and anyone with information is asked to contact them at Ronanstown garda station on 01-666-7700, the Confidential Line at 1800-666-111 or any garda station.