A man has been arrested after more than 200 cannabis plants were found by police officers who followed their sense of smell.
The cannabis factory was found in the back lane of the busy Main Road in Church Village, Pontypridd on Tuesday after two police officers were on patrol in the area.
On noticing the smell, the officers from South Wales Police made enquiries and were led to a commercial premises in the area.
A force spokesman said: "A search warrant was secured and they entered the building to discover four growing rooms containing 239 plants."
In addition to the plants, the officers also discovered 33 vacuum packed bags of cannabis.
"As police searched the premises, an off-duty officer walking his dog nearby noticed a man acting suspiciously and alerted colleagues.
"Shortly after, a 37-year-old Albanian national was arrested and is currently in police custody."
Inspector Stephen Daley described the find as "great" and "timely", with the drugs already bagged and ready for supply.
"It was a great find by these two officers who trusted their instincts. A timely one too, with drugs already picked, bagged and bound for the streets."
Officers are appealing for anyone who has information about this incident to contact 101 quoting reference number 145400.
They are also urging the public to call 101 or Crimestoppers anonymously on 0800555111 if you have suspicions of drug dealing.
