No one was injured during the incident.
A man in his 40s has been arrested in Dublin following the robbery of a premises at a shopping centre.
Gardaí were called to Castletymon Shopping Centre in Tallaght on Monday evening after a man armed with a knife entered a shop and threatened staff before leaving on foot with a sum of money.
Gardaí from the Tallaght District Drugs Unit were patrolling the area and tackled the man to the ground.
The man threatened Gardaí with the knife and was arrested.
The sum of stolen cash was also recovered in the arrest.
The suspect is currently detained under Section 4, Criminal Justice Act, 1984 for questioning at Tallaght Garda station.
No one was injured during the incident and investigations are ongoing.
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