A man in his 20s has been arrested after gardaí discovered a suspected cannabis growhouse in Dundalk this morning.

The drugs were discovered when gardaí searched a house in the Castle Road area at 8am.

As well as cannabis plants, they also found 13kg of suspected cannabis herb, with an estimated value of €310,000.

Gardaí also seized lights, fans and an irrigation system associated with the cultivation of cannabis plants.

The man arrested is being questioned at Dundalk Garda Station.