Cannabis herb worth over half a million euro was seized yesterday in Co Roscommon.
Members of the Roscommon & Longford Divisional Drugs unit searched a house in Frenchpark under warrant at about 3.30 yesterday afternoon.
They discovered a sophisticated growhouse in the residence and external sheds, and seized a total of 139 cannabis plants, with an estimated street value of €112,000.
Also, about 22.5 kg of vacuum-packed cannabis herb was seized, valued at €480,000.
A man in his 20's was arrested and is being detained at Castlerea Garda Station under Section 2 of the Drug Trafficking Act.
Gardai say their investigations are ongoing.