A man in his 20s has been arrested.
Gardai in County Monaghan have arrested a man and seized cannabis plants worth €150,000.
A search took place at a house in Carrickmacross yesterday, under Operation Tara which targets the sale and supply of drugs.
Officers found cannabis plants and also dried cannabis herb.
A man in his 20s was arrested at the scene and was taken to Carrickmacross Garda Station for questioning.

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