Gardaí in Tipperary have released one of the men they were questioning after they found a cannabis grow house yesterday.
More than 1,000 plants were uncovered during the search in New Inn, before officers raided a second premises used to dry the drugs.
Cannabis herb and a shotgun were also seized.
It is thought the plants could have a street value of up to €700,000.
Two other men arrested yesterday are still being held this morning.