GARDAI have discovered cannabis plants with an estimated street value of €500,000 following a raid on a Cork property.
Over 600 mature plants were discovered when gardai raided the premises at Tarelton in Cork following the receipt of specific intelligence.
A sophisticated grow-house operation was discovered.
The plants are understood to be at a mature stage and ready for harvesting.
One man was arrested a short time later.
He was taken to Bandon Garda Station for questioning under the Misuse of Drugs Act.
The man, who is from east Europe, can be held for an initial period of 24 hours.
Garda technical experts were examining the scene todayto determine if the operation is linked to other grow-houses discovered over recent months.
One garda source said the grow-house was extremely high-tech with special heating and watering systems.
The raid was conducted by the West Cork Divisional Drugs Squad and supported by officers from Macroom, Bandon and Clonakilty.
The grow-house was located in an isolated area of Tarelton some 10km outside Macroom town.