Over 320 cannabis plants, with an estimated street value of €256,000, have been discovered in Monaghan town.

Gardaí discovered a grow house at a residential property on Coolshannagh Road on Saturday.

During the search of the location which is described by gardaí as "a highly sophisticated grow house" was found, with the plants at a mature stage of growth.

The premises was sealed off for a forensic technical examination, no arrests have been made and investigations are continuing.