Officers discovered a two-floor cannabis cultivation after forcing entry into a disused warehouse on Kelvedon Street, Newport, on Monday 4 November.
Two men, aged 36 and 19, were arrested on suspicion of being concerned in the production of cannabis and remain in police custody whilst investigations continue.
Inspector Roland Giles said: “We will continue to work tirelessly to crack down on the production, sale and supply of illegal drugs in the Newport area.
“We have put a scene guard in place and our officers will be carrying out enquiries.
“If you have any information that could assist our investigation, please contact us via the website, call 101 or direct message us on Facebook or X, quoting 2400367290.
Alternatively, you can contact Crimestoppers, anonymously, on 0800 555 111.”
