Man arrested after 400 cannabis plants found in Glasgow flat 5 October 2013 Last updated at 12:43 A 46-year-old man has been arrested after 400 cannabis plants were found at a flat in Glasgow. Police discovered the plants during a search of a flat in Hill Street, Garnethill. A quantity of herbal cannabis was also found. The estimated street value of the seizure was about £283,000. The man is expected to appear at Glasgow Sheriff Court on Monday.