The drugs were seized at a wooded area at Fermoy
Members of the Cork City Divisional Drugs Unit observed the man yesterday evening shortly after 6.30pm.
The man collected a quantity of suspected cocaine before being subsequently stopped and arrested by Gardaí.
He is currently being detained at Fermoy Garda Station.
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In a separate incident, a man's been arrested after the seizure of nearly €80,000 worth of drugs in Midleton.
Detectives from the Midleton Drugs Unit stopped an 18-year-old man they had under surveillance in the Ballick area of Midleton.
They found cannabis worth €45,000 along with smaller amounts of cocaine and MDMA in two gear bags.
A man's been arrested and remains in custody at Midleton Garda Station.