A cannabis factory with about 200 plants has been found in a rented house within 30 minutes of a tip-off to Gwent Police.
Sgt Jim Neeson clearing cannabis plants from the house
Police estimated the factory at the three-bedroom property in Roman Way, Caerleon, could have produced drugs worth £100,000 a year on the street.
Mature plants and hydroponic growing equipment were found in a downstairs living room and two upstairs bedrooms.
Police say no arrests have been made and inquiries are continuing.
Sgt Jim Neesam said: "We had entered the house within half-an-hour of receiving information from a member of the public.
"We will now begin investigating details surrounding this cannabis factory."
Insp Rod Grindlay said: "This is one of a number of cannabis factories that have been located within the Newport area over the last 12 to 18 months.
"We would ask for continued vigilance from the public.
"People should report any suspicious activity, such as strong smells or windows and curtains always being closed, to their local neighbourhood policing team."
Anyone with suspicions of drug activity happening in their area can contact police on 01633 838111.