Gardaí have discovered a cannabis grow house and seized around €400,000 of cannabis herb following the search of a premises in Co Mayo.

More than 500 cannabis plants were found by gardaí at a disused premises at Ballinastanford in Claremorris.

Gardaí say the premises had been converted into a grow house with insulation lighting and heat fitted out to facilitate large scale production.

No arrests have been made and investigations are ongoing.