Two men have been arrested following the discovery of a suspected grow house at a location in the Killala area of Co Mayo.
Suspected cannabis plants with an estimated value of €432,800 were seized by gardaí during the search on Friday evening.
The drugs seized will now undergo further analysis with Forensic Science Ireland.
Gardaí said two men, one aged in his 30s and the other in his 20s, were on Saturday detained at a Garda station in the west of the country under Section 2 of the Criminal Justice (Drug Trafficking) Act, 1996.
READ MORE
Whoever wins Sunday showdown between City and Arsenal, Premier League may be the real loser
First Trimester: On-stage sperm-donor interviews elicit touching discussions about parenting
Intermezzo by Sally Rooney: A bold, adventurous and captivating addition to an impressive body of work
Charlotte by Martina Devlin: Unravelling a Brontë psychology of uneasy inheritances and divided loyalties
The seizure forms part of Operation Tara, an enhanced national anti-drugs strategy, which was launched by Garda Commissioner Drew Harris last July.