GARDAI HAVE appealed to the public to be more vigilant about the prevalence of cannabis factories usually in rented properties. Three men, aged 24, 26 and 52, were arrested and files are being prepared for the DPP following a raid on a commercial premises at the Greenogue Industrial Estate, Newcastle, Co Dublin, last Friday morning. The raids were carried out as part of Operation Vacuum, which has been going on for several months and is targeting criminals who are dealing in cannabis that is grown domestically and on an industrial scale. [continues 123 words]