Armed officers were called to a Spar in Rhyl after reports of a man with a firearm last night.
North Wales Police say they arrested a man at a nearby house and recovered an imitation firearm.
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Ian Paul Mcguigan and two men from Liverpool were caught after a police surveillance operation.
The case has now been adjourned until February, due to a delay which the judge blamed on Brexit.
Police described it as a 'particularly vicious crime'.