Officers arrested a man on suspicion of possession with intent to supply after carrying out a search of a Pontlottyn address.
Gwent Police carried out two warrants in the Rhymney area in the early hours of Monday 12 December.
The operation saw the force's roads policing and specialist operations (RPSO) unit join the neighbourhood policing team in carrying out the warrants in connection with an investigation into the supply of drugs.
During a search of an address in Pontlottyn, officers arrested a 29-year-old man from Pontlottyn, Rhymney, on suspicion of possession with intent to supply class B drugs. He remains in custody.
A quantity of cash was also seized during the search of this property.
Inspector Lysha Thompson said:
"Our officers continue to work hard to gather information and carry out operations to tackle the supply of drugs in our communities.
"Warrants such as these demonstrate our continued commitment to protecting our communities from the harmful effects of illegal drugs; we will continue to take enforcement action against those suspected of being involved in this type of crime.
“If you have concerns about drug dealing in your area, please call us on 101 or 999 in an emergency. Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.”